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Q The problem of product quality traceability?
A 1. For every piece pipe,we can link to it’s original Tsingshan raw material MTC.
2. In production and warehouse storage,we have strict process control etc.
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Q How do you perform quality control?
A 1. For every pipe we ship out, we take full responsibility, for every order, we do 100% inspection.
Inspection:Chemical composition inspection, mechanical property inspection, dimensional inspection, appearance inspection, straightness inspection, non-destructive testing.
2.Raw Materials：Tsingshan
3.Issue EN 10204 3.1 certificate,TUV PED APPROVED MTC.
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Q What kind of packaging?
A Woven bags for cabinets.
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Q How long is your delivery time?
A For every order, we ship within two weeks.
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Q Why is the surface of the pipe prone to small spots of air bubbles?
A This is a roller mark, not bubbles, is in contact with the roller in the annealing process, can be repaired and then polished.
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Q How do you guarantee the delivery date?
A We are ready stock.
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Q What kind of package for your pipes?
A Woven bags for FCL shipment, Wooden case for LCL shipment.
Blue woven bags and blue end cap for TP304/L grade,Red woven bags and red end cap for TP316/L.
White woven bags for S32205,S32750 and other grades,such as TP310S,TP347/H,TP321/H etc.
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Q Large diameter pipe Why flare phenomenon?
A Because of the thin wall, this happens during processing, but we will make sure the roundness of the pipe mouth, as well as the roundness of the pipe body. This is a limitation of the production process, but it does not affect the actual use. However, if you want to cut, don't cut in the recessed area.
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Q What tests are done for seamless pipes？
A In strict accordance with ASTM A312 standard: chemical composition analysis, mechanical property test, reaming test, flattening test, non-destructive test.
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Q What non-destructive testing is done on stainless steel seamless pipe?
A According to ATSM A312 standard, non-destructive has eddy current testing, ultrasonic testing, and hydraulic testing. Seamless pipes of 6" and below sizes do eddy current testing, and all sizes can be ultrasonic or hydrodynamic tested.
