... transmission pipe A.Standard:GB/T3091 B.Material: Q195/Q235/Q345A/B C.OD:33. ... : 3.2-12.7mm API H40 casing pipe 1. Standard: GB/T30912. Material: Q195,Q215,Q235,Q295,Q345A/B3. OD: 33 ... customers' requests.10. Application: Low pressure fluid(water,gas)transmission GB/T3091 fluid transmission pipe
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