About ShengtianShengtian Group have sold steel pipe around the world with more than 30 years history. We have established a scientific quality assurance system and obtained certificates such as “API 5L", "BV", "CE", "ISO". Our laboratory has perfect testing apparatus,including EMI, PT, ET, UT, MT, X-ray, Hydrostastic, impact, physical & chemical tester etc, capable to meet various inspection requirements and supply perfect qualtity.