Our modules adopt 35 CrMoA or 40 CrMoMn alloy constructional steel forging. Forgings comply with

JB/TQ252-81 and check by Ⅲ level standard. Machining process through strict process control and

nondestructive testing. Products according to the requirements 5000 psi,7500 psi and 100 00psi pressure standard.