Carbon Steel Seamless pipes are forged using specific methods that turns them into the final result which is a pipe made without any visible lining of welding or joining seen. It is done by using metal sheet stock of needed thickness, which is first put in a U shaped press followed by a O shaped press which completes molding it. Use of a electrode and O shaped die comes into play where the electrode uses a fusing method to join the two ends of the pipes by melting both the ends of the sheet. The pipes are very resistant to corrosion and do not experience any crevice cracking either.
carbon steel seamless pipe specification :
Range :15 NB UP TO 1200 NB IN SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS Form :Seamless / Erw / Welded in Round & Square . Carbon Steel : ASTM / ASME A 53 GR. A , B ASTM / ASME 106 GR. A , B ,C . API 5L GR. B , API 5L X 42 , X 46 , X 52 , X 60 , X 70. ASTM / ASME A 691 GRA , B ,C Alloy Steel: ASTM / ASME A 335 GRP 1 , P 5 , P 9 , P 11 , P 12 , P 22 , P 23 , P 91 ASTM / ASME A 691 GRP1 CR , 1 1/4 CR , 2 1/4 CR , 5 CR , 9CR , 91.