... ,JIS-G3444,GB/T3091-2001,etc.LengthAs per client requirementUsagePetrol,gas,water pipe,construction,chimney potProcessing techniqueThreading,coupling,necking,punching .etc ... timeWithin 30 working days after receipt the downpaymentPackagingBundle,bulk in container or as per customers requirements BesidesWe also can oil and paint ...