... Size:1/8'' to 24'' 2) Standard:APL 5L,API 5CT,ASTM A106,ASTM A53,EN CARBON STEEL SEAMLESS PIPES ... ST 52 , ST374) Standards of Steel Pipe: ASTM A106 , ASTM 53 , API 5L and etc.5) Surface of Steel Pipe oiled or black ... production, the rest payment by T/T on fax of B/L after shipment or by L/C at ... sight L/C will be negotiable in any bank of China11Tolerance Quantity and total amount tolerance: -5%/+5%; ...