... , including material inspection, forging, heat treatment, machining and strictly final inspection by Technology Department,Production department,Quality ... assurance department. 2--Excellent quality and service, competitive price, “in-time” delivery.3--Certificated ... 4--size:OD from 300 to 2000mm5--standard: GB, ASTM, AISI, ASME, DIN, BS, EN, etc 6--FOB Shanghai ...