... and API approvedSpecifications Materialcarbon steel, stainless steel, alloy steelTechniquewelded, bending,forged,exturdConnectionweldingHead codebevel the endSize1/2'' to 72''/DN15-DN2000Angleselbows,bend ... , construction industry, domestic installation and otherCertificatesISO-9001/2000,API,PEDSpecial design available as requirementWe are Hebei Hengtai Piping Equipment manufacture Co ...