... XXS Material: carbon steel API 5L, X42 long radius Bend Size -- Seamless:from 1/2" to 24" ,Welded ... , 20G,16Mn, DIN St37, St45.8, St52.4,St.35.8,St.35.8 ASTM A333 GR.6 ; API 5L ... Steel Grade’s Big Diameter Elbow,Tee,Bend,P91, P92 Bend what we produce have obtained the National Scientific ... technical blank inland, become the successful supplier of West-East natural gas transmission. And it gain the title ...