... seamless pipeHebei shengtian (group) seamless steel pipe Co,. LtdWe manufacture spiral steel pipe with good quality as per API5L, ... requirements;with FBE internal coating for water steel pipes.10.MaterialA53(A,B),A106(B,C)Q235B ... .2,Gr.3; ST37,ST42,ST52;Gr.B,X42,X46,X52,X56,X60,X65,X70, etc11.Usagefor petroleum ... Netherlands,Belgium, etc13.CertificatesAPI 5L; ISO9001:2000 Galvanized Seamless Pipes/Tubes