Video
Seamless steel tubes and pipes for high pressure boiler
| Product material | 20G/ 25MnG/ 12CrMoG /12Cr2MoG/ 15CrMoG/ 12Cr1MoG/ 10Cr9MoIVNbN |
| Product specification | |
| Product applied standard | GB/T5310-2017 |
| Delivery status | |
| Finished products package | Steel belt hexagonal package/plastic film/woven bag/sling package |
Product Manufacturing Process
Tube blank
Inspection (spectral detection, surface inspection, and dimensional inspection)
Sawing
Perforation
Thermal inspection (alloy steel requires heat treatment)
Pickling
Grinding inspection
Lubrication
Cold drawing
Lubrication
Cold-drawing (the addition of cycled processes such as heat treatment, pickling and cold drawing should be subject to the specific specifications)
Normalization/Normalization + tempering
Performance test (mechanical property, metallographic, impact property, hardness, flattening, and flaring)
Straightening
Tube cutting
Non-destructive testing (eddy current, and ultrasonic)
Hydrostatic test
Product inspection
Packaging
Warehousing
Product Manufacturing Equipment
Shearing machine, sawing machine, walking beam furnace, perforator, high-precision cold-drawing machine, heat-treated furnace, and straightening machine
Product Testing Equipment
Outside micrometer, tube micrometer, dial bore gage, vernier caliper, chemical composition detector, spectral detector, tensile testing machine, Rockwell hardness tester, impact testing machine, eddy current flaw detector, ultrasonic flaw detector, and hydrostatic testing machine
Product Applications
High pressure steam boilers and pipelines
Advantage
Precision steel pipe in the inheritance of the advantages of seamless steel pipe at the same time, but also has some of its own characteristics. With precision manufacturing ring parts, can improve material utilization, simplify the manufacturing process, save materials and processing hours, such as rolling bearing rings, jack sets, etc., has been widely used to manufacture precision steel tubes. The promotion of the application of precision seamless tube to save steel, improve processing efficiency, reduce the processing process or equipment investment has important significance, can save costs and processing hours, improve production and material utilization, while helping to improve product quality, reduce costs, to improve economic efficiency has important significance. Generally, the industries that require high precision use seamless precision tubes, and those that do not require precision mostly use seamless tubes, after all, the price of precision seamless tubes with the same specifications is higher than that of seamless tubes.
Package of carbon steel seamless pipe
Plastic caps plugged at the two sides of pipe ends
Should be avoided by the steel strapping and transport damage
Bundled sians should be uniform and consistent
The same bundle(batch) of steel pipe should be came from the same furnace
The steel pipe has the same furnace number,the same steel gradethe same specification
