GB/T3087 Seamless Steel Pipes

Standard：

GB/T3087

Application:

Used to manufacturing various low and medium pressure boilers.

Manufacture method

hot rolling or cold drawing (rolling)

 When the purchaser specifies a certain manufacturing method, it should be indicated in the contract.

Hydraulically test and NDE

The steel pipe should be hydraulically tested one by one.

The supplier can replace the hydraulic test with eddy current testing.

 Ultrasonic testing or magnetic flux leakage testing can also be used instead of hydraulic testing after consultation between the supplier and the buyer. When using eddy current flaw detection, the grade A hole of GB/T 7735-1994 should be used; when ultrasonic flaw detection, the depth grade of the longitudinal notch groove on the outer surface of the comparison sample tube should meet the requirements of C8 in GB/T5777-1996.

Package and Marking

The packaging and marking shall comply with the provisions of GB/T 2102.

Product show:

22 inch SCH30

length:6m

End treatment：bevel ends

Surface treatment:varnish painting

Package：two cotton ropes will be wound on both ends of each pipe

Shipment: 40ft container

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