Spiral welded pipe equipment

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1.Special design available according to requirement
2.anti-corrosion and high-temperature resistant with black painting

Packaging & Delivery

Packaging Detail:	According to the contract or the standard export packing.
Delivery Detail:	5-8 months

Specifications

technical:spiral steel pipe
out diameter:219-2220mm
thickness:Sch5-Sch160XXS
standard:ANSI,ASME GB, SH,HG, MSS,JIS,DIN, AP

Type	spiral steel pipe
Size	219mm-2220mm
Wall thickness	Sch5-Sch160XXS
Standard	ANSI,ASME GB, SH,HG, MSS,JIS,DIN, API
	Q235,Q345,API 5L GRB. X42-X65 and so on
Packaging	painting black, cap, In bundle.
Applications range	petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat, exchanger, gas metallurgy, shipbuilding, construction, etc.
Min Order Quantity	20 tons
Delivery Time	According to customer's requirement
Quality	First grade
Productivity	1000000
Others	1.Special design available according to requirement 2.anti-corrosion and high-temperature resistant with black painting 3. All the production process are made under the ISO9001:2000 strictly.

Q: A roll forming machine, rolling out of the length is always not up to a fixed size, not too small, that is, more than that, what is the cause?: Yes, the width of the bearing plate can be a deviation from the length.

Q: What is rolling forming processing?: A special rolling tool is used to exert certain pressure on the surface of the workpiece so as to make the surface metal flow.

Q: Improvement in rolling forming process: The rolling will produce a hardening layer on the surface of the workpiece. This layer has obvious delamination phenomenon with the internal material, which is easy to cause the surface layer to fall off;

Q: Introduction of roll forming process: Roll forming began around 1960s in europe. Because of roll forming, the working model has the advantages of high production efficiency, saving material and increasing product strength.

Q: What kind of material and what heat treatment are used for pressing roller (molding, feeding, cutting force, heavy load, heavy load) of sheet steel rolling machine?: Use 40Cr or 20Cr, Cr12.Cr12MoV, quenching and tempering treatment, think of hardness, high point, carburizing, nitriding, and consider adding lubrication device to extend its service life

Q: What is the surface rolling forming machine process?: Due to the rolling surface of metal plastic deformation, so that the surface microstructure of cold hardening and grain refinement, forming a dense fibrous, and the formation of residual stress, hardness and strength, so as to improve the surface wear resistance, corrosion resistance and compliance.

Q: Process mould for rolling forming process: Rolling forming is more complicated and requires higher than rolling thread. The die design is based on the different shapes of the workpiece, the design of the rolling plate into a cross section or a few sections, can use synchronous type; also can use grading type.

Q: Material and equipment for roll forming process: Rolling process is a cold forging process, which can be used for rolling and forming a lot of materials. Among them, low carbon steel is a material commonly used in rolling forming, and non-ferrous metal is more suitable for roll forming.

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