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Square & Retangular Tube JIS G3446 STK400-STK520

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The raw materials of products come from well-known steel factory in China. Every production process strictly implements the ISO management system to ensure the good quality of each steel pipe.

Product Description


Product NameWelded Steel Pipe, Hot Dipped Galvanized Steel Pipe, Pre Galvanized Steel Pipe
Outer Diameter12.7mm-508mm
Wall thickness0.6mm-15.09mm
LengthSingle random length / Double random length / 0.5m-12.5m Length can be customized
StandardAPI 5L, API 5CT, EN10219, EN10210, ASTM A53, ASTM A795, ASTM A500, ASTM A252, BS1387,  BS EN39, BS1139 , ISO65, BS4568,  BS EN10296, JIS G3444, JIS G3446, GB/T3091, GB/T9711
MaterialGr.B, X42, X52, X60, X65, X70,  S235JR, S275J0, S275J2, S355J0, S355JR, S355K2, STK290, STK400, STK490, STK500, SS330, SS400, SS500,  ST37, ST42, ST52, Q195-Q355
Section ShapeRound Hollow
Technique1.Electronic Resistance Welded ( ERW )
2.Hot Dip Galvanized
3.Galvanized steel strip is welded into shape
EndsPlain end/Beveled/grooved,  thread/coupling,  protected by plastic caps
Surface Treatment1. painting/Varnish coating/anti-rust oil
2. Logo / Sizes & Spec painting
3. 3LPE, 3PP, FBE
4. Galvanized
5. Which client request
Packing1) Bundle  2)  Water proof  plastic wrap 3)with all kinds of colors PVC
MOQ5 Metric tons
OriginTianjin & Hebei, China
CertificatesISO9001, ISO14001, ISO18001, API 5L, API 5CT, CE, JIS, UL, SGS, BV, TUV
Delivery TimeUsually within 10-45 days after receipt of down payment (Big Qty shall be further discussed)
Product Application1)Low pressure liquid, water, gas, oil, steam, fire pipe                                                                                  
2)Construction industry , structure , machinery manufacturing,  automotive industry,  highway guardrails
3)Agriculture fence post , agricultural greenhouses,furniture, decoration and steel structure


Oil Gas ISO3183 API 5L PSL1 PSL2 ERW Steel Pipe