Large diameter linepipe for conveying gas ,water, and petroleum of both the oil and natural gas industries. aLare Diameter Pipe & tube for ship ... 72inch 3. as per API 5L Large diameter linepipe for conveying gas ,water, and petroleum of both the oil ... ,X42, X52, X56, X 603. Size range : outside diameter : 8.6 - 31.93inch, wall thickness :0.79 ... service and pipes for gas bottle. Large diameter line pipe