STANDARD: ASTM A106 MATERIAL: GrB SIZE: 1"-24? (33.4mm-610mm) LENGTH: 5.8m,6m,11.8m,12m, as per order. PRODCTION CAPACITY: more than 8000 Tons per month. APPLICATION: used in petrol gas ,oil field, high temperature working condition and so on. Quantity Per Month: 8000 Tons