erw pipetianchuang pipe

erw pipetianchuang pipe

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ASTM A500 Black Hollow Section carbon steel big diameter

When using A500 round for a building column,you could specify an HSS8.625×0.322 with an outside diameter (OD) tolerance of +/-0.75% and a wall tolerance of +/-10%.The A53 equivalent,an 8 inch standard pipe,has an OD tolerance of +/-1% and a wall tolerance of -12.5%.Hence,an A500 round has better/tighter OD and wall tolerances.BS1387 Steel Pipe Contact Person Eric Tel 86-0317-5635826 Fax 86-03175635826-5635826ERW Electric Resistance Welded Steel Pipes Manufacturer ERW pipe means electric resistance welded pipe,and it is a resistance welding by 10-500 kHz of high-frequency current.The raw material of the ERW steel pipe is hot rolled steel coil made of steel billet,and the usual material is Q195,Q215,Q235,Q355 in China ERW pipe grade,which are same material with S195,S235,S355 in Europe,and SS400 in Japan.

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