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gb t3091 q345b steel pipe for construction

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    API 5L Line PipeCasing Tubing Seamelss Steel Pipe gb t3091 q345b steel pipe for construction

    Nov 22, 2017 · Producing about 36000 TON of Carbon Steel Pipe, Casing Pipe, Welded Steel Pipes The company covers an area of 50000 square meters, more than 500 employees, complete equipment, we have power to make all kinds of steel pipes to meet customer's demands.An Introduction of Square Steel Pipes - LandeeThe standard number of the galvanized welded square steel pipes for transporting low pressure fluid is GB/T3091-2008. The typical materials of galvanized welded square steel pipes are Q235A, Q235B, Q345B, etc. Galvanized welded square steel pipes are mainly used for transporting water, coal gas, air, oil, hot water or steam, and they are gb t3091 q345b steel pipe for construction

    Cangzhou Guyuan Steel Pipe Co.

    SY/T5037-2008, API 5L, GB/T9711.1-1997 Material Q235B, Q345B, X42, X52, X60 Diameter 219MM--1220MM Thickness 6--20MM square pipes Zinc coating 60 to 130g/m² Sizes 20 x 20 to 100 x 100mm WT 0.5 to 2.5mm Length 2 to 12m (optional) International standards BV, SGS and ISO Standards ASTM-A53A, BS1387-1985 and GB/T3091-2001 Materials Q195 gb t3091 q345b steel pipe for constructionChina API 5L Psl1 ERW Steel Pipe X42, X52, X60, Gr. B gb t3091 q345b steel pipe for constructionSteel Pipe, Welded Pipe, Welded Steel Pipe manufacturer / supplier in China, offering API 5L Psl1 ERW Steel Pipe X42, X52, X60, Gr. B Steel Grade, Qdis315 Butt Fusion Welding Machine for HDPE Pipe, Shy 450 Butt Fusion Welding Machine for HDPE Pipe and so on.China Building Material Square Tube with Q235B, Q345b gb t3091 q345b steel pipe for constructionChina Building Material Square Tube with Q235B, Q345b, Find details about China Stainless Steel Pipe, Round Pipe from Building Material Square Tube with Q235B, Q345b - Shanghai Changzeng Metal Co., Ltd. Menu gb t3091 q345b steel pipe for construction GB/T3091-2001, GB/T13793-92, ISO630/E235B/ JIS G3131/JIS G3106:

    China ERW Carbon Steel Pipe Manufacturer Q345b - China

    China ERW Carbon Steel Pipe Manufacturer Q345b, Find details about China ERW Carbon Steel Pipes, ERW Carbon Tube Manufacturer from ERW Carbon Steel Pipe Manufacturer Q345b - Tianjin Yitejia Steel Sales Co., Ltd. gb t3091 q345b steel pipe for construction Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose Section gb t3091 q345b steel pipe for constructionChina ERW Pipe for Structure Pipe GB/T3091 Q345b - China gb t3091 q345b steel pipe for constructionERW pipe for structure pipe GB/T3091 Q345B . Standards BS EN 10219, EN 10217, EN10224, ASTM A53, A106, API, JIS G3444, and GB/T3091, GB/T9711 Steel Grades S235-S355 gb t3091 q345b steel pipe for constructionChina ERW Steel Pipe for Fluid Transportation or Structure gb t3091 q345b steel pipe for constructionFor structure-As piling steel pipe/bridge structure/road structure etc. Process drawing of ERW welded steel pipe Material of welded steel pipe adopt steel plate or steel strip, because of different welding processes and into the furnace pipe, welded (ERW) pipes and automatic arc welded.

    China GB/T13793 GB/T3091 Q195 Q235 Q345 Q420 Pipe/

    Steel Pipe, GB/T13793 GB/T3091, Q195 Q235 Q345 manufacturer / supplier in China, offering GB/T13793 GB/T3091 Q195 Q235 Q345 Q420 Pipe/ Tube, X42 X46 X52 X56 X60 API 5L Gr. B ERW Steel Pipe, Hot Sale Welded ERW Steel Pipe / Tube and so on.China GB/T3091 Q235B Galvanized Steel Square Pipe - China gb t3091 q345b steel pipe for constructionGalvanized Steel Square Pipe, Galvanized Square Pipe, Galvanized ERW Square Pipe manufacturer / supplier in China, offering GB/T3091 Q235B Galvanized Steel Square Pipe, ASTM B209 Standard Quality 3003 3004 3005 Compass Aluminum Checkered Sheet, 1mm 2mm 3mm X-ray Lead Shielding Sheet Roll Factory Price and so on.China GB/T3091 Steel Pipe Galvanized Carbon Steel Pipe Tube, Galvanized Pipe, Steel Pipe manufacturer / supplier in China, offering GB/T3091 Steel Pipe Galvanized Carbon Steel Pipe for Building, Hot DIP Galvanized Hammer-in Ground Screw 101X101X750mm, Hot DIP Galvanized Hammer-in Ground Screw 101X101X900mm and so on.

    China Galvanized Square Steel Pipe 90*50 Used for gb t3091 q345b steel pipe for construction

    China Galvanized Square Steel Pipe 90*50 Used for Greenhouse Structure, Find details about China Pipe, Tube from Galvanized Square Steel Pipe 90*50 Used for Greenhouse Structure - TIANJIN WINTONG IMP AND EXP CO., LTD. gb t3091 q345b steel pipe for construction GB/T3091-2001, GB/T8162, GB/T8163:10#, 20#, 35#, 45# 16MN(Q345B)GR. A, GR. B, GR. gb t3091 q345b steel pipe for construction API 5L A B X42, X46, X52, X60, X65 gb t3091 q345b steel pipe for constructionChina Galvanized Square Steel Pipe 90*50 Used for gb t3091 q345b steel pipe for constructionChina Galvanized Square Steel Pipe 90*50 Used for Greenhouse Structure, Find details about China Pipe, Tube from Galvanized Square Steel Pipe 90*50 Used for Greenhouse Structure - TIANJIN WINTONG IMP AND EXP CO., LTD. gb t3091 q345b steel pipe for construction GB/T3091-2001, GB/T8162, GB/T8163:10#, 20#, 35#, 45# 16MN(Q345B)GR. A, GR. B, GR. gb t3091 q345b steel pipe for construction API 5L A B X42, X46, X52, X60, X65 gb t3091 q345b steel pipe for constructionChina Gi Pregalvanzied Welded Square Steel Pipe /Zinc Code gb t3091 q345b steel pipe for constructionChina Gi Pregalvanzied Welded Square Steel Pipe /Zinc Code 275g, Find details about China Galvanized Pipe Gi Pie, Prime Quality Galvanized Pipe from Gi Pregalvanzied Welded Square Steel Pipe /Zinc Code 275g - Jinan Xin Jiyuan Special Section Tube Co., Ltd. gb t3091 q345b steel pipe for construction GB/T3091-2001, GB/T8162, GB/T8163:10#, 20#, 35#, 45# 16MN(Q345B)GR. A, GR. B, GR. C gb t3091 q345b steel pipe for construction

    China High Quality ERW Carbon Steel Welded Pipe & Tube gb t3091 q345b steel pipe for construction

    China High Quality ERW Carbon Steel Welded Pipe & Tube, Find details about China Steel Welded Pipe, ERW Stee Pipe from High Quality ERW Carbon Steel Welded Pipe & Tube - Qingdao Jiahexin Steel China Hot Dipped Galvanized Carbon Steel Tube Q345b gb t3091 q345b steel pipe for constructionGalvanized Steel Pipe Q345b, Galvanized Steel Plate Q345b, Hot Dipped Galvanized Q345b manufacturer / supplier in China, offering Hot Dipped Galvanized Carbon Steel Tube Q345b, High Quality H Beam (Q235, Q345, SS400, A36), Aluminum Sheet Plate (1050, 1060, 1070, 1100, 1145, 1200, 3003, 3004, 3005, 3105) and so on.China Hot Rolled Construction Material Steel U C Channel gb t3091 q345b steel pipe for constructionMild U Beam Steel Channel S235 U Steel Channel Bar Q235 U Steel Channel Bar. 1) steel grade Q235B Q345B S235Jr SS400 A36 etc. 2) package in bundles. 3) delivery time 10~25days. 4) USD construction, structure building. 5) surface clean & painting & galvanized. according to

    China Hot Rolled Construction Material Steel U C Channel gb t3091 q345b steel pipe for construction

    Mild U Beam Steel Channel S235 U Steel Channel Bar Q235 U Steel Channel Bar. 1) steel grade Q235B Q345B S235Jr SS400 A36 etc. 2) package in bundles. 3) delivery time 10~25days. 4) USD construction, structure building. 5) surface clean & painting & galvanized. according to China Premium Quality Steel Structural Tianjin Youfa Brand gb t3091 q345b steel pipe for constructionGB/T3091-2001, GB/T8162, GB/T8163:10#, 20#, 35#, 45# 16MN(Q345B)GR. gb t3091 q345b steel pipe for construction Steel construction, mechanical, manufacturing, construction, automobile manufacturing, shipbuilding, electricity and more gb t3091 q345b steel pipe for construction we have 11 subsidiariesand branchs in Tangshan, Handan, and Shanxi. They are totally 9000 employees, In addition 64 ERW Steel Pipe production line gb t3091 q345b steel pipe for constructionChina good supplier IPE80 price IPE,UPE gb t3091 q345b steel pipe for construction - Goldensun SteelWe are professional China good supplier IPE80 price IPE,UPE,HEA,HEB carbon steel h beam for construction supplier and factory in China.We can produce China good supplier IPE80 price IPE,UPE,HEA,HEB carbon steel h beam for construction according to your requirements.

    Differences in mechanical properties of Q345B and Q355B gb t3091 q345b steel pipe for construction

    General Construction Steel; Latest Design ASME SA335 P91 seamless steel pipe; ASTM A106 Grade B Steel pipe; High quality GB/T 18248 30CrMo Alloy steel pipe price; High yield strength cold forming steels; ASTM A519 Grade 1045 carbon Steel Seamless Tubing; GB 8163 20# Seamless Carbon Steel Pipe used for Construction; GB/T8162 40Cr Seamless Steel PipeEN10219 S275J0H CHS Pipe - HYSP Steel Pipe SupplierAll those pipes are used for construction pipe or building pipe. Structure S275J0H CHS Pipe is widely needeed in global economy construction. Product name EN10219 S275J0H CHS Pipe Standard EN10219, EN10210, API 5L, API 5CT,ASTM A53, ASTM A252, ASTM A500, BS1387, GB/T3091 ERW Red Color Fire Pipe, Low Pressure Fluid Pipe 4:Standard:ASTM A53, BS1387, GB/T3091, EN10219, EN39, BS1139, ISO65, API 5L etc. 5:Surface:Red painted, or other colors. 6:End finishPlain/ beveled ends, threaded with plastic caps or grooved each ends. 7:Usage"Structure pipe, Low Pressure fluid pipe for water oil or gas, fire fighting used pipes

    ERW Red Color Fire Pipe, Low Pressure Fluid Pipe Manufacturer

    4:Standard:ASTM A53, BS1387, GB/T3091, EN10219, EN39, BS1139, ISO65, API 5L etc. 5:Surface:Red painted, or other colors. 6:End finishPlain/ beveled ends, threaded with plastic caps or grooved each ends. 7:Usage"Structure pipe, Low Pressure fluid pipe for water oil or gas, fire fighting used pipesERW Welded Steel Pipes, ERW Welded Steel Pipes suppliers gb t3091 q345b steel pipe for constructionStandard GB/T3091-2008, API SPEC 5L Material Q195, Q215, Q235, Q345B, X42, X52, X60 Type Straight welded steel pipe Process Electrical resistance weldFeuerverzinktem Stahlrohr - China SHANGH TOP STEELHot galvanized steel pipe specification 1. Standard GB/T3091 - 2001, A53, EN10255, DIN2440, BS1387 etc. 2. Materials Q235, Q345B, Gr.B, S195T, ST35

    GB/T 13793 08 Steel Pipes with A Longitudinal Electric gb t3091 q345b steel pipe for construction

    GB/T 13793 specifies the classification, code, order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of straight seam welded steel pipes. GB/T 13793 is suitable for structure purposes of machinery and construction with straight seam welded gb t3091 q345b steel pipe for constructionGB/T 3091-2008 Q235B welded steel pipes - BBN Larger gb t3091 q345b steel pipe for constructionQ235B welded steel pipes is an industrial steel pipe which under GB/T 3091-2008 standard, Q235B welded steel pipess surface can be painted black paint, varnish, antiseptic oil, galvanized or according to customer requirements, mainly used in low-pressure liquid, water, gas, oil, pipeline, construction, fence, Or wooden pallet packing, piping paint, end plastic cover or according to customer requirements.GB/T 8162 Q345B steel pipe,GB/T 8162 Q345B steel pipe gb t3091 q345b steel pipe for constructionGB/T 8162 Q345B steel pipe GB/T8162 Q345B Steel pipe is the low carbon alloy steel (c0.2%), good comprehensive performance, low temperature performance, cold stamping performance, welding performance and good cutting performance. GB/T8162 Q345B Steel

    GB/T3091 Q235B Steel Pipe manufacturers,GB/T3091 Q235B gb t3091 q345b steel pipe for construction

    On the basis of the GB/T 700 and GB/T 1591 standards, the GB/T 3091 straight seam steel pipe is made of Q195, Q215A,Q215B,Q235A,Q235B,Q295A,Q295B,Q345A and Q345A steel type.GB/T3091 Q345b Galvanized Steel Pipe for ConstructionChina GB/T3091 Q345b Galvanized Steel Pipe for Construction, Find details about China Q345b Galvanized Steel Pipe, Q345b Galvanized Pipe from GB/T3091 Q345b Galvanized Steel Pipe for Construction - Tianjin Standard Steel Co., Ltd.Galvanized Steel Pipe Price Supplier & Manufacturer gb t3091 q345b steel pipe for construction3. Costs more than black steel pipe because of the zinc coating and manufacturing process involved in producing galvanized pipe. 4. Long life time because of its extremely rigid and strong, it has a lifespan of 40 years. Applications of Galvanized Steel Pipe-Mechanical& manufacture,-Steel structure,-Shipbuilding,-Bridging,-Automobile chassis

    Hebei Zhuowei Steel Pipe Manufacturing Co., Ltd. ,Steel ,China

    External or internal layer carbon steel executive standard/Material EN10217-1,EN10219-1,EN10224 SY/T5037-2000; GB/T3091-2008; GB/T9711.1-1997/ S235JR,Q235B Our SSAW/ LSAW Pipes/ Stainless Steel with Carbon Steel Complex Welded Pipes are applied to various large /medium sized conveying projects (include petroleum, natural gas, coal gas, fuel gb t3091 q345b steel pipe for constructionHot Dip Galvanized Steel Pipe Tube,304 Hollow Gi gb t3091 q345b steel pipe for constructionHot Dip Galvanized Steel Pipe Tube,304 Hollow Gi Galvanized,Erw Carbon Round Seamless Carbon Steel Pipe , Find Complete Details about Hot Dip Galvanized Steel Pipe Tube,304 Hollow Gi Galvanized,Erw Carbon Round Seamless Carbon Steel Pipe,Carbon Steel Pipe,Galvanized Steel Pipe Price,Steel Pipe from Supplier or Manufacturer-TYNE (Tianjin) Metal Material Co., Ltd.Hot Galvanized Steel Pipe - China SHANGH TOP STEELHot galvanized steel pipe specification 1. Standard GB/T3091 - 2001, A53, EN10255, DIN2440, BS1387 etc. 2. Materials Q235, Q345B, Gr.B, S195T, ST35

    Hot rolled GB Q345 steel plate with standard length of New gb t3091 q345b steel pipe for construction

    Quality Hot rolled GB Q345 steel plate with standard length - find quality New Products, Steel Sheets & New Products from Shanghai Changzeng Metal Co., Ltd. of China Suppliers - 113298211.I Bar Steel (I Beam) FenZhan SteelWholesale prices for all kinds steel beams with largest selection. Any Quantity with best quality, Any Size with most competitive prices, Delivered Anywhere! +86 0571 8791 3562 [email protected]I Bar Steel (I Beam) FenZhan SteelWholesale prices for all kinds steel beams with largest selection. Any Quantity with best quality, Any Size with most competitive prices, Delivered Anywhere! +86 0571 8791 3562 [email protected]

    In stock ERW steel pipe oct.2019 - Hunan Great Steel Pipe gb t3091 q345b steel pipe for construction

    Galvanized Steel Pipe; Black Steel Pipe; Boiler Pipe; Stainless Steel Pipe. Stainless Seamless Pipe; Stainless Welded Pipe; ASTM A213 Steel Pipe; ASTM A778 Steel Pipe; ASTM A268 Steel Pipe; ASTM A632 Steel Pipe; ASTM A358 Steel Pipe; Alloy Steel Pipe. Alloy Seamless Pipe; Alloy Welded Pipe; ASTM A335 Steel Pipe; ASTM A519 Steel Pipe; ASTM A213 gb t3091 q345b steel pipe for constructionIn stock ERW steel pipe oct.2019 - Hunan Great Steel Pipe gb t3091 q345b steel pipe for constructionGalvanized Steel Pipe; Black Steel Pipe; Boiler Pipe; Stainless Steel Pipe. Stainless Seamless Pipe; Stainless Welded Pipe; ASTM A213 Steel Pipe; ASTM A778 Steel Pipe; ASTM A268 Steel Pipe; ASTM A632 Steel Pipe; ASTM A358 Steel Pipe; Alloy Steel Pipe. Alloy Seamless Pipe; Alloy Welded Pipe; ASTM A335 Steel Pipe; ASTM A519 Steel Pipe; ASTM A213 gb t3091 q345b steel pipe for constructionLSAW pipeline,seamless steel pipe supplier - BBN large gb t3091 q345b steel pipe for constructionASTM A53 Steel Pipe,Black and Hot-Dipped,Zinc-Coated,Welded and Seamless GB/T3091-2008 steel pipe for low pressure liquid delivery GB/T13793-2008 Longitudinal electric resistance welded steel tubes

    Mild Steel Erw Slaw Ssaw Astm A53 Black Steel Pipe Tube gb t3091 q345b steel pipe for construction

    Mild Steel Erw Slaw Ssaw Astm A53 Black Steel Pipe Tube For Structure Construction , Find Complete Details about Mild Steel Erw Slaw Ssaw Astm A53 Black Steel Pipe Tube For Structure Construction,Mild Steel Black Steel Pipe,Erw Slaw Ssaw Steel Tube,Black Steel Pipe For Structure Construction from Steel Pipes Supplier or Manufacturer-Hunan ADTO Building Industrial Group Co., PIPE LINE - IBSQstandardgb/t9711.1, api 5l, astm a53, astm a500, astm a672, astm a515 , jis g3444, jis g3443-1 . . .Prime Quality Mild Iron Square Tube For gb t3091 q345b steel pipe for construction - ZS Steel PipeThe mainly product welded steel pipe,seamless steel pipe,square steel pipe ,galvanized steel pipe,elbow,flange and so on. Also can produce diameter(21.3-457.2mm) thickness of wall(1.8-14.27mm) of (ERW)electric-resistance welded steel pipe, diameter(219-3020mm) thickness of wall(5.0-30mm)of (SSAW)double submerged arc spiral welded pipe.

    Products - steel pipe pipe fittings

    Representative material for Q235B Q345B and other steel materials. Mainly for low conveying water, oil, gas, heating and . other pipelines. 8. Transport flammable and non-flammable fluid pipe, standard number GB / T9711.1 - 1997. Representative material for . L245-L415, etc. (GB / T9711.2) pipeline steel.Q195 Q235 Q345b Ss400 A36 Hot Rolled Carbon Steel Coil gb t3091 q345b steel pipe for constructionQ195 Q235 Q345b Ss400 A36 Hot Rolled Carbon Steel Coil , Find Complete Details about Q195 Q235 Q345b Ss400 A36 Hot Rolled Carbon Steel Coil,Carbon Steel Coil,Hot Rolled Carbon Steel Coil,Hot Rolled Steel Coil Ss400b from Steel Sheets Supplier or Manufacturer-Tianjin Credit Import And Export Trading Co., Ltd.Q235b steel tube erw steel pipe - taartenprinses.nlMaterial Q235b Steel Pipe, Material Q235b Steel Pipe . offers 3,919 material q235b steel pipe products. About 33% of these are steel pipes, 20% are steel sheets, and 1% are metal building materials. A wide variety of material q235b steel pipe options are available to you, such as astm, jis, and gb

    Q345 Steel Specification and Equivalent Standard

    Q345 steel specification Q345 steel belongs to 16Mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coil/sheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel gb t3091 q345b steel pipe for constructionSAWH Reference List - Global Market PANYU CHU KONG Applications UOE JCOE HFW SAWH COE Three-roll Bending SAW Pipes CRA Clad & Lined Steel Pipes Stainless Steel Welded Pipes Coatings Fittings Packing&Transportation Sale Network HFW Reference List SAWL Onshore Reference List SAWL Offshore Reference List SAWH Reference List Bend Reference ListSSAW Steel Pipe, Spiral Welded Pipe, Welded Steel PipeSSAW steel pipe is the raw material of strip coil, often temperature extrusion molding, automatic double-wire double submerged arc welding process made of spiral seam pipe. Spiral steel pipe will strip into the pipe unit, the multi-roll rolling, strip rolled up, forming a circular gap opening gap, adjust the squeeze roll reduction, the weld gap gb t3091 q345b steel pipe for construction

    SSAW pipes - BBN Group

    Manufacturing process is rolling the steel strip, to make the rolling direction have an angle with the direction of the pipe center, forming and welding, so the welding seam is in a spiral line. Production and inspection according to API SPEC 5L pipeline specification, GB/T3091, GB/T9711-2011, EN10219, ASTM A252 standard.Square Pipe FenZhan SteelUsed for low pressure liquid delivery, such as water, gas, and oil; construction and piling Steel Standard API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444,Square Pipe FenZhan SteelUsed for low pressure liquid delivery, such as water, gas, and oil; construction and piling Steel Standard API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444,

    What is a SSAW pipe? - China steel pipelines, flanges gb t3091 q345b steel pipe for construction

    What is a SSAW pipe?. Spiral submerged arc welded steel pipe is a kind of metal pipe with spiral seam welded by submerged arc welding technology.. SSAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature. All the pipes are produced according to API Spec 5L, GB/T9711.1, GB/T9711.2, ASTM A252-89 standard.Yuanfang Steel Pipe-RobinCangzhou Yuanfang Steel Pipe Co., Ltd. is a production and export trade as one integrated gb t3091 q345b steel pipe for construction API.2B GB/T3091 GB/T50205 GB/T13793. Product Category Seamless square pipe / rectangular tube gb t3091 q345b steel pipe for construction GB/T3094-2012 20 # \ Q345B \ Q345D Welded square tube / rectangular tube Specifications 30 * 30-800 * 800mm, thickness 2.5-30mm gb t3091 q345b steel pipe for constructionfactory steel pipe bs1387 with advantage price - Carbon gb t3091 q345b steel pipe for constructionSteel Pipe Sch40 BS7 Gi Pipe GradeQ195 Q345B AdvantageHigh quality and good price. Favorites. Schedule 40 Steel Gi Pipe Price for Metal Building Materials GradeQ195 Q345B AdvantageHigh quality and good price. Read More. Steel pipe, Steel coil, Strip steel, Profile steel gb t3091 q345b steel pipe for construction Spiral Welded Steel Pipe for Gas or Oil or Construction and so on. Read gb t3091 q345b steel pipe for construction

    gb t3091 q235b q345b schedule 40 - Carbon steels - Steel gb t3091 q345b steel pipe for construction

    We specializes in gb t3091 q235b q345b schedule 40. Gb Q235b, Gb Q235b Suppliers and Manufacturers at offers 76,954 gb q235b products. About 6% of these are steel pipes, 1% are steel rails. A wide variety of gb q235b options are available to you, such as 10#, a53(a,b), and q235.round steel pipe for constructionShop from professional Hot Dipped Galvanized Steel Pipe manufacturers and suppliers for quality round steel pipe for construction made in China here. The best service and fast delivery are offered. gb t3091 q345b steel pipe for construction GB/T3091-2001, BS1387-1985, DIN EN10025, EN10219, JIS G3444:2004, ASTM A53. Steel Grade GB/T3091-2001 --- Q235B, Q345B BS1387-1985. DIN gb t3091 q345b steel pipe for constructionstandard size q235b square pre pipe pipe - Carbon Steel gb t3091 q345b steel pipe for constructionq235b q345b rectangular hollow section steel pipe. erw q235b steel pipes weight. Steel Pipe, Welded Pipe, Welded Steel Pipe manufacturer / supplier in China, offering Q235B, Q345b ERW Pipe by ASTM, API, DIN, GB/T Standard, S275 S355 Square Steel Hollow Section Rectangle Steel Hollow Section, 304 Welded Decorative Stainless Steel Chat Now. Get Price