Machining technology of large diameter steel saw pipe:
(1) Thread processing wire head Wuxi large diameter pipe, tooth shape, pitch and so on should be connected with sleeve teeth, space together, and through matching observation qualified.
(2) Water-soluble cutting fluid should be used to lubricate steel wire; when the temperature is below 0 C, 15% - 20% large-caliber Wuxi sodium nitrite tube should be added, and oil lubricant or lubricant should not be used to thread.
(3) Each operator should check the appearance of high-quality wire head and make operator symbols.
(4) Steel wire head self-certification, each standard responds to the processing capacity of large-caliber pipelines, Jiangsu random sampling 10%, and not less than 10%. If a failure is a full view of batch processing, the failed steel wire head should be re-processed after inspection, and can be used again.
(5) Silk head wear that has been certified as qualified should be preserved in order to maintain caps, which are regularly reserved according to standard classification