Strict quality control system and perfect after-sales service system are always our top concern which can guarantee and track the quality of our products from raw materials procurement, production processes, finish products as well as after-sales service.
Test:SGS or Third- party test
Delivery: 5-7days after deposit
Spiral steel pipe is made of strip coil as raw material, extruded at regular temperature and welded by automatic double wire double submerged arc welding process. The spiral steel pipe will feed the strip into the welding tube unit, and the strip will be rolled up gradually to form a circular tube blank with open gap after rolling by multiple rolls. The pressure down of the extrusion roll will be adjusted so that the weld gap is controlled within 1~3mm and both ends of the welding joint are flush.
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Conventional Parameters |
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OD |
20-500mm |
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Length |
5.8-12m |
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Thickness |
0.5-40 mm |
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Material |
Q235A,Q235B,1010,1020,Q345(16Mn)L245(B),L290(X42),L320（X46）,L360（X52）、L390(X56)、L415(X60)、L450(X65),L485(X70),L555(X80),L290NB/MB(X42N/M),L360NB/MB(X52N/M),L390NB/MB(X56N/M),L415NB/MB(X60N/M)、L450MB(X65)、L485MB(X70)、L555MB(X80) |
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Tolerance |
±0.5% |
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Processing Service |
Welding, Punching, Cutting, Bending, Decoiling |
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Payment term |
T/T (30% Deposit) |
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MOQ |
5Tons |
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Packing |
Standard Sea-worthy Packing |
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Standard |
AISI,ASTM,DIN,JIS,GB ,JIS,SUS,EN,etc |
A.In the process of forming, the steel plate has uniform deformation, small residual stress and no scratch on the surface. The processed spiral steel pipe has greater flexibility in diameter and wall thickness size and specification range, especially in the production of high steel grade thick wall pipe, especially in small and medium caliber thick wall pipe has incomparable advantages in other processes, can meet the user's more requirements in spiral steel pipe specifications.
B. Adopting advanced double-sided submerged arc welding technology, welding can be realized in the best position, and it is not easy to have defects such as wrong side, welding deviation and incomplete welding, and it is easy to control the welding quality.
C. 100% quality inspection of steel pipe is carried out, so that the whole process of steel pipe production is effectively detected and monitored, and the product quality is effectively guaranteed.
D. All the equipment of the whole production line has the function of networking with the computer data acquisition system to realize real-time data transmission, and the technical parameters in the production process are checked by the central control room.
Spiral steel pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, is one of the 20 key products developed in China.
For liquid transportation: water supply, drainage. For gas transportation: gas, steam, liquefied petroleum gas. For structural use: for piling pipes, Bridges; Pipe for wharf, road, building structure, etc.
