... Tube WT:6-40mm Tolerance:OD ±0.75% , WT ±10%Grade:20# , 35# , 45#27SiMn Hydraulic Tube Material: 27SiMn ... mining machineApplication: Industry , Chemical industry ,Ship-building industry , Oil industry ,Architecture industry 27SiMn Hydraulic Tube Standard: GB/T17396-98Certification ... (Mainland) 102 14-25 Chengdu & Xining China (Mainland) 108 10-28 Chengdu & Xining China (Mainland) 121-180 ≤15 Chengdu & ...