Discussion on First-lot Inspection of Seamless Steel Pipes for Oil/Gas Transmission Service

Analyzed are the currently-existing problems concerning the first-lot inspection of seamless steel pipes.The problems include no uniform standard that specifies the regulations for the first-lot inspection, no way to perform the first-lot inspection for small quantity order, lack of full suitability of the steel grade-based method for the first-lot inspection, little meaning of repeated first-lot inspections of proven products, and lack of retaining of data from the first-lot inspection by the production facility.Accordingly, suggestions for establishing regulations for the first-lot inspection of seamless steel pipes are proposed.