... My company is in strict accordance with the API standard drill pipe, casing lightpipes hose body heat ... monitoring instrument, has processing 127mm drill pipe Φ 73-139.7 - Φ rod body 244.5 mm, light tube and ... technology, threaded parameters is 20% higher than API standard requirements, advanced inspection testing equipment can undertake ... , magnetic powder detection test. oil tubing(API spec 5CT)