Q235 Q355 Spiral Welded Pipe with a Diameter of 300mm to 3500mm

• After-sales Service: One Year
• Warranty: One Year
• Type: Welded
• Model NO.: Q235B Q355b Ss400 Ss540 S235 S275 S355
• Technique: Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Length: 12m, 6m, 1-12m or Customized
• Certificate: API/SGS/ISO/TUV
• Standards: ASTM, AISI, GB, JIS, DIN
• Edge: Mill Edge, Slit Edge
• Delivery Time: with 7-15 Days
• Key Words: Spiral Steel Pipe
• Width: 600mm-1250mm
• Surface: Black Painted, Galvanized, Color Coated
• Payment Term: L/C T/T (30% Deposit)
• MOQ: 5 Tons
• Sample: Avaliable
• Transport Package: Standard Seaworthy Package
• Specification: customizable
• Trademark: Baotai
• Origin: China
• HS Code: 7306190000
• Production Capacity: 5000ton/Month

Product Description

Product Description

 

Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warm extruded and welded by automatic double wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel to the welding pipe unit, and the strip steel is rolled by multiple rolls. The strip steel is gradually rolled up to form a circular tube blank with an open gap. Adjust the reduction of the extrusion roll to control the weld gap at 1~3mm, and make both ends of the weld crater flush.
 

Commodity	welded  steel pipe
Outer Diamater	1/2"-24"(20mm-610mm)
Wall Thickness	0.4-25mm
Length	1-12m or as your requirement,Ready to ship pipes are 6m long
Steel Material	Q195 Q235 Q345 St37 St52 A53
Standard	ASTM A53 ASTM A500; GB/T3091 GB/T3094;DIN EN10025; DIN EN10217-2005; BS EN10217; BS EN10219; BS EN10025; JIS G3466
Type	Welded pipe
Pipe ends	1)Plain 2)Beveled 3)Threaded with coupling and plastic cap
End protector	1) Plastic cap 2) Iron protector 3) as request
Surface Treatment	1) Bared 2) Black Painted 3) Galvanized 4) Oiled
Deep processing	oiled, painted, galvanized, powder coating, shrink head, pressure groove, welding head, punching, threaded with coupling and plastic cap
Inspection	With Hydraulic Testing, Eddy Current, Infrared Test
Application	Construction,machine structure pipe, Agriculture equipment pipe,Water and gas pipe, Greenhouse pipe, Scaffolding pipe, Building material tube, Furniture tube, Low pressure fluid tube, Oil pipe, etc.
Shipment	FCL LFL By bulk
Loading port	Xingang,China
Package	Packed in bundles with 6-8 pcs steel strips Packed in bundles with 6-8 pcs steel strips, and wrapped with waterproof cloth Packed as your request
Payment terms	TT or LC at sight

Advantages of spiral welded pipe:

(1) Steel pipes of different diameters can be produced using strip steel of the same width, and
steel pipes of large diameter can be produced from narrow strip steel.

(2) Under the same pressure conditions, the stress of the
spiral welded seam is smaller than that of the straight seam, which is 75% to 90% of that of the straight seam welded pipe, so it can withstand greater pressure. Compared with the straight seam welded pipe of the same outer diameter, the wall thickness can be reduced by 10% to 25% under the same pressure.

(3) The size is accurate, the general diameter tolerance does not exceed 0.12%, the deflection is less than 1/2000, and the ovality is less than 1%. Generally, the sizing and straightening process can be omitted.
(4) Continuous production is possible. In theory, long steel pipes can be produced, with small head and tail loss, and can
increase the metal utilization rate by 6% to 8%.

(5) The equipment is light in weight and low initial investment. It can be made into a trailer-type mobile unit to directly produce welded pipes at the construction site where the pipeline is laid.

 

The production of spiral welded steel pipes can reflect the advantages of high quality and high efficiency. The production capacity of one spiral welded pipe unit is equivalent to 5-8 sets of straight seam welded pipe equipment. How to make multiple pipe coiling equipment production lines meet the same production standard, that is, produce according to a unified production process specification and quality assurance system to meet welding quality Requirements and piping manufacturing grades will be an arduous task.

Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warm extruded and welded by automatic double wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel to the welding pipe unit, and the strip steel is rolled by multiple rolls. The strip steel is gradually rolled up to form a circular tube blank with an open gap. Adjust the reduction of the extrusion roll to control the weld gap at 1~3mm, and make both ends of the weld crater flush.

Our Advantages

1.Customization is avaliable according to requirements.
2.All production processes are strictly under ISO 9001-2008.
3.Free sample (not contain the cost of freight).
4.Third party inspection (SGS,BV...) is welcomed.
5.Visit factory any time.
6.FOB/ CIF/ CFR/ ERW is accepted. 

 

Appication

* Widely used in the mechanical treatment field, petrochemical industry, transport and construction field
* Ordinary structural purposes and mechanic structural purposes, for example in construction field, fulcrum bearing etc;
* The transportation of fluids in the projects and big equipment, such as transport of water, oil, gas etc
* Can be used in low and medium pressure boiler for the transportation of fluids, for example steam tube, big smoke tube, small smoke tube, generating tube etc.

 

FAQ

Q1 What about the quality control in your factory ?
We have own laboratory , also own quality control system and professional quality inspectors . 

Regarding to each order ,we must ask the inspection department to make inspection report for our client

Q2 How does your price quote ?
1 Lowest material cost in best quality
2 All the products are designed and product by ourselves to save product's cost
3 Quote the price in hours with the best price to help the partner to open the market.

Q3 Do you support OEM or ODM?
Yes right !we could accept client 's design and we produce according to client 's drawing and we provide free service of
installation face to face

Q4 what about the payment terms?
Our normal payment terms is 30% T/T as the prepayment and 70% balance need to be paid off before shipment, we also could accept
L/C for good client who have been familiar with our factory for a few years .