... 5.Certificate:API.ISO9001:2000.BV structure seamless pipeHebei shengtian (group) seamless steel pipe Co,. LtdWe manufacture spiral steel pipe with good quality as per API5L ... protecting caps as percustomer's requirements;with FBE internal coating for water steel pipes.10.MaterialA53(A,B),A106(B,C ... France, England, the Netherlands,Belgium, etc13.CertificatesAPI 5L; ISO9001:2000 seamless steel pipe