Oil casing pipes(erw pipe):
1) Nominal OD: 114.3 - 609.6mm (4" - 24")
2) Wall thickness: 3.2 - 19.1mm
3) Standard: API SPEC 5L, ASTM, BS, GB/T9711.1-1997Low pressure liquid pipe: 1) Nominal OD: 21.3 - 194mm (1/2" - 7 1/4") 2) Wall thickness: 2.5 - 8.18mm3) Standard: ASTM, GB/T3091-2001  fengfeng698#hotmail