China Factory Large Diameter Spiral Welded Black Mild Carbon Steel Tube Round Square Rectangle SSAW API 5L Galvanized Stainless Steel ERW Welded Steel Pipe

• After-sales Service: 1 Year
• Warranty: 1 Year
• Type: Welded
• Technique: SAW
• Material: Carbon Steel
• Surface Treatment: Hot Rolled
• Usage: Oil/Gas Drilling, Fluid Pipe
• Section Shape: Round
• Thickness: 3-30 mm
• Length: 12m, 6m, Custom
• Processing Service: Bending, Welding, Punching, Cutting
• Invoicing: by Actual Weight
• Alloy or Not: Non-Alloy
• Special Pipe: API Pipe
• Certificate: ISO9001
• Standard: JIS
• Oiled or Non-Oiled: Non-Oiled
• Delivery Time: Within 7 Days
• Grade: Steel
• Transport Package: Standard Packing
• Specification: customer′s requirement
• Trademark: Zhong Ding
• Origin: China
• Production Capacity: 9500 Ton/Tons Per Week

Product Description

Product Description

                            Spiral Steel PipeIt is made by rolling low-carbon carbon structural steel or low-alloy structural steel strip according to a certain spiral angle (called forming angle) into a tube blank, and then welding the tube seam together. It can be made with a narrower Strip steel produces large diameter steel pipes. Its specifications are expressed by outer diameter * wall thickness, and the welded pipe shall be ensured that the hydraulic test, the tensile strength of the weld and the cold bending performance must meet the requirements.

 

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 anarduous task.

Specification

Production	Spiral Welded Steel Pipe
Brand	Longford
Standard	API 5L, API 5CT, SY/T5037, SY/T5040, GB/T9711.1,GB/T9711.2, A, B, X42-X80, L175-L555,L245NB, etc.
Material	1.0033,08F,A53,A106,Q235,Q345b,
Out Diameter	159mm-3200mm
Wall Thickness	3mm-30mm
Length	5.8m-11.8m,or as customer's requirements.
Place of Origin	Tianjin, China
Main Market	Middle East,Africa,South-east Asia,USA,Canada,South America
Technique	SAW, ERW welyading etc.
Usage	1. Piling project  2. Heat-supply project  3. Conveying drinking water,drainage,coal gas,fuel gas,mine slurry and other low & middle pressure fluids  4. API5L Petroleum and natural gas pipeline  5. Chemistry industry 6.Electric power engineering circulating pipe
Package	1.Bundle packing or in bulk 2. Bevelled or plain ends as per buyer's request 3. Marks: as per customer's request 4. Surface treatment: with or without varnish/2PP/2PE/3PE/3PP/FBE coating 5. Metal or plastic protecting caps at pipe ends
Delivery Time	about 20days after receipt of irrevocable L/C at sight or 30% deposit T/T
Other products	1.Spiral welded steel pipe 2.LSAW steel pipe 3.ERW steel pipe 4. Casing pipe
External Coating	FBE, 2PE, 3PE,3PP etc.
Pipe end	Plain end, beveled end, PVC covered and both ends capped ,threaded and coupled

Factory equitment

Application

Package&Shipping