Main Points of Large Diameter LSAW Steel Pipe Processing Technology

Large diameter LSAW welded steel pipe processing technology main points: (1) processing of reinforced thread of large diameter pipe, wire head  teeth form and pitch and other necessary and cohesive set of teeth form and pitch, and form a complete set of gauge to check the qualified. (2) the steel bar thread machining, should choose water soluble cutting fluid lubrication; When temperature is lower than 0 ℃, should be mixed with 15% - 15% of large-diameter structural steel pipe sodium nitrite, shall not be made lubricants or without lubricant oil set of silk. (3) the operator should check each steel wire head the appearance quality and make the operator symbols. (4) a steel wire head through self-inspection, respond to each 10% random sampling inspection of large diameter square in jiangsu standard manufactured, and not less than 10, if there is a, namely the batch processing full view, unqualified silk head should be heavy processing, the after inspection qualified can be used again. (5) mild steel pipe has inspection qualified wire head, put on the maintenance cap should be maintained, and according to the standard classification of neat.