... NPS: 1/8" to 10"B) Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S, ... , low temperature, corrosion SeamlessOil cracking tube20G12CrMo15CrMoGB9948-8810-530×1.5-36Refined plant oil refining furnace, heat exchange tubes, seamless ... Tube16MnGB816222-630×2-30 Hydraulic prop tube27SiMnGB/T17396-199870-377×12-40Hydraulic support, etc.Fertilizer management20G,16Mn,Q345GB6479-200025-426× ...