- Overview
- Product Introduction
- Product Specification
- Product and Factory Display
- Application Scope
- Why Choose Us
- Packaging and Transportation
- FAQ
Basic Info.
Model NO.
Q195 Q215 Q235 Q275
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry
Section Shape
Round
Standard
GB/T700, GB/T1591, En 10025, DIN 17100, API 5L
Grade
Q235, Q345, S235jr, St37-2, API 5L
Processing Service
Bending, Welding, Decoiling, Punching, Cutting
Surface
3PE Coating Fbe
Oiled or Non-Oiled
Slightly Oiled
Certificate
ISO9001
Delivery Time
8-14 Days
Transport Package
Standard Seaworthy Packing
Trademark
YF STEEL
Origin
Tianjin, China
Production Capacity
10000 Tons Per Month
Product Description
Welded pipe is an electric welded round pipe that is an alternative to steel pipes.It is a structural grade tube that is suitable for a wide variety of applications where dimensional accuracy and precision tolerances is not a primary concern.A raised weld seam is present inside the pipe.Spiral welded steel pipe is a kind of practical steel pipe, now it has been widely used in small and medium-sized construction site construction facilities, not only that, spiral steel pipe is often used in mining, power, construction and various pipeline systems, one of the important industries.
On the basis of the original is trying to research this more excellent quality of new spiral steel pipe, the purpose is to spiral steel pipe for everybody to create greater profits for pressure fluid transmission with spiral seam submerged arc welding steel pipe.Spiral welded pipe industry investment risk and prospect consulting analysis report released by China industry research network shows that spiral welded pipe is widely used in the fields of tap water engineering, petrochemical industry, hydropower station, power industry, agricultural irrigation and rural construction.Spiral steel pipe is widely used in agriculture, chemical industry, construction, water conservancy, petrochemical industry.
Key Specifications/ Special Features:
1)Spiral welded pipe is the low carbon carbon structural steel and low alloy steel strip according to certain Angle of helix Angle (called molding) rolled into a tube billet, then pipe seam welding made up, it can use a narrow strip in the production of large diameter steel pipe.* wall thickness, according to its specifications with diameter welded pipe shall ensure that the water pressure test, the tensile strength and cold bending properties of the weld in accordance with regulations.
2)Commonly used standards of the spiral steel pipe can be divided into: SY/T5037-2000 (solid, also known as the common fluid conveying pipe with spiral seam submerged arc welding steel pipe), GB/T9711.1-1997 (national standard, also known as oil and gas industry conveying pipe delivery technical conditions in the first part: grade A steel pipe (GB/T9711.2 strict grade B steel pipe)), API 5L (American petroleum institute, also known as the pipeline steel pipe; which can be divided into PSL1 and PSL2 two levels), SY/T5040-92 (pile with spiral seam submerged arc welding steel pipe).
| Description | Spiral Welded Steel Pipe, Straight Seam Welded Steel Pipe, Carbon Steel Tube, ERW Steel Tube, EFW Steel Pipe |
| Standards | API 5L ERW PSL1/PSL2, EN39, BS1139, BS1387, EN10255, ASTM A53, A500, A36, A795, ANSI C80, DIN2440, JIS G3444, GB/T3091, GB/T13793 |
| Certificate | API 5L ERW PSL1/PSL2, API 5CT, CE, ISO |
| Material | Q195, Q215, Q235, Q275, Q295, Q345, S275, S355, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8 |
| ASTM A53: Gr.A, Gr.B, Gr.C, Gr.D | |
| API 5L: Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70 | |
| GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555 | |
| ASTM A252: Gr.1 Gr.2 Gr.3 | |
| Type | Spiral, ERW (Electrical Resistance Weld), EFW (Electric Fusion Welding) |
| Outside Diameter | 6mm-2500mm (1/8 inch, 1/4 inch, 1/2 inch, 3/4 inch, 1inch, 1 1/4 inch, 1 1/2 inch, 2inch, 2 1/2 inch, 3inch, 3 1/2 inch, 4inch, 5 inch, 6inch, 8 inch, 10 inch, 12inch, 14inch, 16 inch, 18 inch, 20 inch, 22 inch, 24 inch, 26inch, 28 inch, 30 inch, 32 inch, 34 inch, 36 inch, 38 inch, 40 inch, 42 inch, 44 inch, 46 inch, 48 inch) |
| Thickness | 1mm~220mm (SCH5 ,SCH10,SCH20,SCH30,STD,SCH40,SCH60,XS, SCH80,SCH100,SCH120,SCH140,SCH160, XXS) |
| Length | 6m-12m,or as required |
| Outside Coating | Anti-rust oil, black painting. |
| Epoxy Coating according to AWWA C-210 | |
| Bitumen Coating according to DIN30672, BS534 | |
| Coal- Tar Enamel Coating according to AWWA C-203 | |
| 3 Layer polyethylene Coating according to DIN30670 | |
| 3 Layer Polypropylene Coating according to DIN30678 | |
| Inside Coating | Epoxy lining according to AWWA C-210 |
| Bitumen Lining according to DIN30673, BS534 | |
| Coal-Tar Enamel Lining according to AWWA C-203 | |
| Cement Mortar Lining according to AWWA C-205, BS534 | |
| Testing and Inspection Reports | EN 10204 3.1, Mill TC EN 10204 3.1, Third Party Inspection Reports, Visual Inspection Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Chemical and Mechanical Reports, NABL Approved Lab |
| Price Term | EX-Work, FOB, CFR, CIF |
| Package | Wooden box, bundled for export standard or as required |
| Payment Term | T/T, L/C, |
| Delivery Time | 25-45 days (based on quantity) after receiving advanced payment |
| Application | a) General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation and nuclear) b) Fluid, gas and oil transport c) Pressure and heat transmission d) Construction and ornament e) Boiler heat exchangers |
Chemical Composition and Mechanical Properties
| Standard | Grade | Chemical Composition (max)% | Mechanical Properties (min) | |||||
| C (Max.) | Mn (Max.) | Si (Max.) | S (Max. | P (Max.) | Yield Strength(Mpa) | Tensile Strength(Mpa) | ||
| GB/T700-2006 | Q235A | 0.22 | 1.40 | 0.35 | 0.050 | 0.045 | 235 | 370 |
| Q235B | 0.20 | 1.40 | 0.35 | 0.045 | 0.045 | 235 | 370 | |
| Q235C | 0.17 | 1.40 | 0.35 | 0.040 | 0.040 | 235 | 370 | |
| Q235D | 0.17 | 1.40 | 0.35 | 0.035 | 0.035 | 235 | 370 | |
| GB/T1591-2009 | Q345A | 0.20 | 1.70 | 0.50 | 0.035 | 0.035 | 345 | 470 |
| Q345B | 0.20 | 1.70 | 0.50 | 0.030 | 0.030 | 345 | 470 | |
| Q345C | 0.20 | 1.70 | 0.50 | 0.030 | 0.030 | 345 | 470 | |
| BS EN10025 | S235JR | 0.17 | 1.40 | - | 0.035 | 0.035 | 235 | 360 |
| S275JR | 0.21 | 1.50 | - | 0.035 | 0.035 | 275 | 410 | |
| S355JR | 0.24 | 1.60 | - | 0.035 | 0.035 | 355 | 470 | |
| DIN 17100 | ST37-2 | 0.20 | - | - | 0.050 | 0.050 | 225 | 340 |
| ST44-2 | 0.21 | - | - | 0.050 | 0.050 | 265 | 410 | |
| ST52-3 | 0.20 | 1.60 | 0.55 | 0.040 | 0.040 | 345 | 490 | |
| JIS G3101 | SS400 | - | - | - | 0.050 | 0.050 | 235 | 400 |
| SS490 | - | - | - | 0.050 | 0.050 | 275 | 490 | |
| API 5L PSL1 | A | 0.22 | 0.90 | - | 0.030 | 0.030 | 210 | 335 |
| B | 0.26 | 1.20 | - | 0.030 | 0.030 | 245 | 415 | |
| X42 | 0.26 | 1.30 | - | 0.030 | 0.030 | 290 | 415 | |
| X46 | 0.26 | 1.40 | - | 0.030 | 0.030 | 320 | 435 | |
| X52 | 0.26 | 1.40 | - | 0.030 | 0.030 | 360 | 460 | |
| X56 | 0.26 | 1.10 | - | 0.030 | 0.030 | 390 | 490 | |
| X60 | 0.26 | 1.40 | - | 0.030 | 0.030 | 415 | 520 | |
| X65 | 0.26 | 1.45 | - | 0.030 | 0.030 | 450 | 535 | |
| X70 | 0.26 | 1.65 | - | 0.030 | 0.030 | 585 | 570 | |
| API 5L PSL2 | B | 0.22 | 1.20 | - | 0.025 | 0.015 | 245-450 | 415-760 |
| X42 | 0.22 | 1.30 | - | 0.025 | 0.015 | 290-495 | 415-760 | |
| X46 | 0.22 | 1.40 | - | 0.025 | 0.015 | 320-525 | 435-760 | |
| X52 | 0.22 | 1.40 | - | 0.025 | 0.015 | 360-530 | 460-760 | |
| X56 | 0.22 | 1.40 | - | 0.025 | 0.015 | 390-545 | 490-760 | |
| X60 | 0.22 | 1.40 | - | 0.025 | 0.015 | 415-565 | 520-760 | |
| X65 | 0.22 | 1.45 | - | 0.025 | 0.015 | 450-600 | 535-760 | |
| X70 | 0.22 | 1.65 | - | 0.025 | 0.015 | 483-621 | 565-758 | |
Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
ASTM A53 (ASME SA53) carbon steel pipe is a specification that covers seamless and welded black and hot-dipped galvanized steel pipe in NPS 1/8″ to NPS 26. A 53 is intended for pressure and mechanical applications and is also acceptable for ordinary uses in steam, water, gas, and air lines.
A53 pipe comes in three types (F, E, S) and two grades (A, B).
A53 Type F is manufactured with a furnace butt weld or may have a continuous weld (Grade A only)
A53 Type E has an electric resistance weld (Grades A and B)
A53 Type S is a seamless pipe and found in Grades A and B)
A53 Grade B Seamless is our most polar product under this specification and A53 pipe is commonly dual certified to A106 B Seamless pipe.
ASTM A53 Grade B Pipe Chemical Properties %
| Type S(seamless) | Type E(electric-resistance welded) | Type F(furnace-welded pipe) | |||
| Grade A | Grade B | Grade A | Grade B | Grade A | |
| Carbon max. % | 0.25 | 0.30 | 0.25 | 0.30 | 0.30 |
| Manganese % | 0.95 | 1.20 | 0.95 | 1.20 | 1.20 |
| Phosphorous, max. % | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Sulfur, max. % | 0.045 | 0.045 | 0.045 | 0.045 | 0.045 |
| Copper, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Nickel, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Chromium, max. % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Molybdenum, max. % | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Vanadium, max. % | 0.08 | 0.08 | 0.08 | 0.08 | 0.08 |
Outside Diameter at any point shall not vary from standard specified more than:
| For NPS 1 1/2 and Smaller Sizes | For NPS 2 and Larger Sizes | ||
| 1/64″ | 1/32″ under | 1% over | 1% under |
| Seamless and Electric-resistance-welded | Continuous-welded | ||
| Grade A | Grade B | ||
| Tensile Strength, min., psi | 48,000 | 60,000 | 45,000 |
| Yield Strength, min., psi | 30,000 | 35,000 | 25,000 |
Butt-welded pipe is formed by feeding a hot steel plate through shapers that will roll it into a hollow circular shape. Forcibly squeezing the two ends of the plate together will produce a fused joint or seam.
Least common of the three methods is spiral-welded pipe. Spiral-welded pipe is formed by twisting strips of metal into a spiral shape, similar to a barber's pole, then welding where the edges join one another to form a seam. This type of pipe is restricted to piping systems using low pressures due to its thin walls. 
Each of the three methods for producing pipe has its advantages and disadvantages. Butt-welded pipe, for example, is formed from rolled plate that has a more uniform wall thickness and can be inspected for defects prior to forming and welding. This manufacturing method is particularly useful when thin walls and long lengths are needed. Because of the welded seam, however, there is always the possibility of defects that escape the numerous quality control checks performed during the manufacturing process. As a result, the American National Standards Institute (ANSI) developed strict guidelines for the manufacture of pipe. Pressure Piping Code B31 was written to govern the manufacture of pipe. In particular, code B31.1.0 assigns a strength factor of 85% for rolled pipe, 60% for spiral-welded pipe, and 100% efficiency for seamless pipe.
Generally, wider wall thicknesses are produced by the seamless method. However, for the many low-pressure uses of pipe, the continuous welded method is the most economical. Seamless pipe is produced in single and double random lengths. Single random lengths vary from 16′-0″ to 20′-0″. Pipes 2″ and below are found in double random lengths measuring from 35′-0″ to 40′-0″.
We can produce different sizes, thicknesses, widths and materials according to your requirements 
Anti-corrosion processing
Our manufacturing facilities, perform three types of welding processes: ERW, LSAW, HSAW and Anti-corrosion. The facilities are fully equipped with the world's utmost advanced full auto production lines and lab test equipment which allows us to provide the quality of our product.
3LPE steel pipe blasting&coating equipment can make water gas oil supplied pipeline dia. (32-3000mm),according to customers demand. The production line make internal and external shot blasting derusting,Dual Fusion Bonded Epoxy powder/liquide Coating & PE/PP film Wrapping ,End of PE grooving system and so on.
Hydrostatic test
Carbon welded steel pipe has high strength, which makes them ideally suitable for pressure applications within the oil & gas, petrochemical, chemical, water supply, energy, sewage treatment, vanitation pipe, pulp & paper industries, etc. 
01.Customized service Different types of product as you choose,Logo print for client's special request for ensuring your quality.
02.Advanced equipment
More production lines, using the most advanced equipment in China, a plant area of 5,000 square meters.
03.High-quality base steel
We choose high-quality raw materials. Our base steel comes from Baosteel, Shougang, etc., and our coating materials come from Nippon, Aksu and other well-known international brands.
04.Output
Products with a monthly output of about 5000-10000 tons, and have sufficient inventory.
05.Quality inspection
The implementation of strict quality inspection standards, products comply with ISO, SGS international standards, to ensure 100% compliance with customer requirements.
06.Price advantage
Advanced production management process, from production to delivery, efficient and fast.The most important is our competitive price, enquiry us for more details~
We offer different modes of transport depending on the customer's destination: rail transport and ship transport,etc.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
Q1:Can you send samples?A:Of course, we can provide customers with free samples and express shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya, Ghana,somalia and other African countries.Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q13:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion and various climate changes during ocean transportation.
Q14:What is your working time?
A:In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry in the coming working day.