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Are you looking for high-quality steel pipes that provide superior performance?
Tengdi Machinery is an excellent s iron pipe making machine manufacturer with whom to explore cooperation. Tengdi offers a large selection of various steel pipe fabrication machines designed to meet your unique requirements. We can be confident that you will get the best steel pipe fabrication line option f or your needs. Tendy works with highly skilled specialists who contribute their years of experience and guarantee that all of our work is of the highest standard.
About Large Diameter Spiral Pipe Making Machine
Large-diameter spiral welded pipe (double-sided submerged arc welded pipe) is a spiral seam steel pipe welded by automatic double-wire double-sided submerged arc welding process. (1) The raw material is Strip coils, welding wire, flux. Before putting into use, they must go through strict physical and chemical tests.
(2) The head-to-tail butt joint of strip steel adopts single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after being rolled into steel pipes.
(3) Before forming, the strip steel is leveled, trimmed, planed, surface cleaned, transported and pre-bent.
(4) Electric contact pressure gauges are used to control the pressure of the cylinders on both sides of the conveyor to ensure the smooth conveying of the strip.
(5) Adopt external control or internal control roll forming. The first three steel pipes of each batch must undergo a strict first inspection system to check the mechanical properties of the weld, chemical composition, fusion status, steel pipe surface quality and non-destructive testing to ensure that the pipe making process is qualified before it can be formally put into production.
(6) The weld gap control device is used to ensure that the weld gap meets the welding requirements, and the pipe diameter, misalignment and weld gap are strictly controlled.
(7) Both internal welding and external welding use American Lincoln welding machine for single-wire or double-wire submerged arc welding, so as to obtain stable welding specifications.
(9) Use an air plasma cutting machine to cut the steel pipe into single pieces. The welded seams are all inspected by an online continuous ultrasonic automatic flaw detector, which ensures 100% non-destructive testing coverage of spiral welds. If there is a defect, it will automatically alarm and spray the mark, and the production workers can adjust the process parameters at any time according to this to eliminate the defect in time.
(10) After cutting into single steel pipes, the first three steel pipes of each batch must undergo a strict first inspection system to check the chemical composition of the weld, the state of fusion, the surface quality of the steel pipes and non-destructive testing to ensure that the pipe-making process is qualified.
(11) The part marked by continuous ultrasonic flaw detection on the weld shall undergo manual ultrasonic and X-ray re-examination. If there is a defect, after repair, it shall undergo non-destructive inspection again until it is confirmed that the defect has been eliminated.
(12) The pipes where the strip steel butt welds and the D-joints intersecting with the spiral welds are located have all been inspected by X-ray TV or film.
(13) Each steel pipe has passed the hydrostatic pressure test, and the pressure is radially sealed. The test pressure and time are strictly controlled by the steel pipe water pressure microcomputer detection device.
Q: Are you manufacturer?
A: Yes. We are manufacturer. We have our own technical team. Welcome to visit us.
Q: What payment terms do you accept?
A: We are flexible on payment terms, please contact us for details!
Q: What info you need before you make the proposal?
A: The pipe diameter and thickness range which you need or the profile drawings material information, your special requirements and speed of the machine.
Q: How do you do QA?
A: We have special team do strict QA, this is our strengths:
(1)Every gear box will be tested for 8 hours with oil inside to guarantee there is no leak.
(2)Every shaft will be inspected for the centering jumpiness.
(3)Every roller will be checked to make sure it is in the range of tolerance critical parts will be inspected for all dimensions.
Are you looking for high-quality steel pipes that provide superior performance?
Tengdi Machinery is an excellent s iron pipe making machine manufacturer with whom to explore cooperation. Tengdi offers a large selection of various steel pipe fabrication machines designed to meet your unique requirements. We can be confident that you will get the best steel pipe fabrication line option f or your needs. Tendy works with highly skilled specialists who contribute their years of experience and guarantee that all of our work is of the highest standard.
About Large Diameter Spiral Pipe Making Machine
Large-diameter spiral welded pipe (double-sided submerged arc welded pipe) is a spiral seam steel pipe welded by automatic double-wire double-sided submerged arc welding process. (1) The raw material is Strip coils, welding wire, flux. Before putting into use, they must go through strict physical and chemical tests.
(2) The head-to-tail butt joint of strip steel adopts single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after being rolled into steel pipes.
(3) Before forming, the strip steel is leveled, trimmed, planed, surface cleaned, transported and pre-bent.
(4) Electric contact pressure gauges are used to control the pressure of the cylinders on both sides of the conveyor to ensure the smooth conveying of the strip.
(5) Adopt external control or internal control roll forming. The first three steel pipes of each batch must undergo a strict first inspection system to check the mechanical properties of the weld, chemical composition, fusion status, steel pipe surface quality and non-destructive testing to ensure that the pipe making process is qualified before it can be formally put into production.
(6) The weld gap control device is used to ensure that the weld gap meets the welding requirements, and the pipe diameter, misalignment and weld gap are strictly controlled.
(7) Both internal welding and external welding use American Lincoln welding machine for single-wire or double-wire submerged arc welding, so as to obtain stable welding specifications.
(9) Use an air plasma cutting machine to cut the steel pipe into single pieces. The welded seams are all inspected by an online continuous ultrasonic automatic flaw detector, which ensures 100% non-destructive testing coverage of spiral welds. If there is a defect, it will automatically alarm and spray the mark, and the production workers can adjust the process parameters at any time according to this to eliminate the defect in time.
(10) After cutting into single steel pipes, the first three steel pipes of each batch must undergo a strict first inspection system to check the chemical composition of the weld, the state of fusion, the surface quality of the steel pipes and non-destructive testing to ensure that the pipe-making process is qualified.
(11) The part marked by continuous ultrasonic flaw detection on the weld shall undergo manual ultrasonic and X-ray re-examination. If there is a defect, after repair, it shall undergo non-destructive inspection again until it is confirmed that the defect has been eliminated.
(12) The pipes where the strip steel butt welds and the D-joints intersecting with the spiral welds are located have all been inspected by X-ray TV or film.
(13) Each steel pipe has passed the hydrostatic pressure test, and the pressure is radially sealed. The test pressure and time are strictly controlled by the steel pipe water pressure microcomputer detection device.
Q: Are you manufacturer?
A: Yes. We are manufacturer. We have our own technical team. Welcome to visit us.
Q: What payment terms do you accept?
A: We are flexible on payment terms, please contact us for details!
Q: What info you need before you make the proposal?
A: The pipe diameter and thickness range which you need or the profile drawings material information, your special requirements and speed of the machine.
Q: How do you do QA?
A: We have special team do strict QA, this is our strengths:
(1)Every gear box will be tested for 8 hours with oil inside to guarantee there is no leak.
(2)Every shaft will be inspected for the centering jumpiness.
(3)Every roller will be checked to make sure it is in the range of tolerance critical parts will be inspected for all dimensions.
