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.
| Product Name |
Spiral steel pipe |
| Standard |
GB,AISI,ASTM,DIN,EN,SUS,UNS,JIS API 5L, API 5CT |
| Grade |
Gr.B Q195-Q345 S275, S275jr, st37,etc |
| Material |
API A106 GR.B A53 304 X42-X80, L175-L555,L245NB, etc. |
| Thickness |
1.0-25mm |
| Length |
12m, 6m, 1-12m or customized |
| Surface |
Smooth and neat surface, no burrs and no pits |
| Pipe Ends |
Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc. |
| Certificate |
CE, BIS, SGS, ISO9001 |
| Testing Methods |
Pressure test,Flaw detection,Eddy current testing, Hydro static testing or Ultrasonic examination and also with chemical and |
|
physical property inspection |
| Packaging |
Small pipes in bundles with strong steel strips,large pieces in loose; Covered with plastic woven bags; |
|
Wooden cases;Suitable for lifting operation;Loaded in 20ft 40ft or 45ft container or in bulk; |
|
Also according to customer's requests |
| Origin |
Shandong,China |
| Quantity |
10,000 tons per month |
| Application |
Conveying oil gas and water |
| Third Party Inspection |
SGS BV MTC |
| Trade Terms |
FOB,CIF,CRF |
| Payment Terms |
FOB: 30%T/T,70% before shipment |
|
CIF: 30% pre-payment and the balance to be paid before making shipment |
|
or Irrevocable 100% L/C at sight |
| Delivery Time |
Usually within 15-20 days after receipt of advance payment |
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.
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.
* 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.
Q1: Do you provide samples? Is it free or extra?
A1: Yes, we can provide samples free of charge and the customer will pay the freight.
Q2: What if I don't have export experience?
A2: We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3: How long is your lead time?
A3: If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4: What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C
after receive B/L 30-120 days, O/A.
Q5: How is your technical support?
A5: We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
Q6: What's your terms of payment?
A6: 30%T/T as the upfront deposit, 70% before delivery, We will show you the photos and package before you pay the balance.
Q7: What's the terms of delivery?
A7: EXW, FOB, CFR, CIF, DDU
Q8: What's the terms of packing?
A8: Generally, we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers'requirement.
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