Good Machining & Heat Treatment Abilities Strict Quality Control Prompt Delivery date We are manufacturer and ... Check Report We can offer the third party inspection, like ABS, SBS,BV,GL, CCS,etc. UT test: 100% ... Cylinder ≤1.5 ≤4.0 5. Certification: ISO9001: 2000, ABS,BV,PED 97/23/EC ,GL 6. Work Shop: 7 ... LF2/F1/25CrMo4/42CrMo/17CrNiMo6/347H/304 ASTM DIN high quality Forged Hollows tube, bar,pipe