Straight seam Steel Pipe is a steel pipe with the weld seam parallel to the length of the steel pipe. Usually can be divided into welded thin-walled steel pipes, metric Welded Steel Pipes, transformer cooling pipes, etc. The production management process of the straight seam welded pipe is relatively simple, the cost is low, the production efficiency is high, and it is economical and practical. The strength of the spiral welded pipe is higher than that of the straight seam welded pipe, and the welded pipe with a larger diameter can use a narrower blank, and the production cost is higher. Seam tubes are increased by 30 to 100%, thus reducing the production speed of straight seam tubes.
Straight seam steel pipe: used for low pressure fluids in engineering transportation systems. Steel pipes need to be subjected to a number of experiments such as water pressure and bending, and have certain ability requirements for the quality of surface-processed products. Usually, the conveying length is 4 - 10m, usually we need to do a fixed working length (or double length), and the specification of the welded pipe is expressed by the universal design diameter (mm or inch). Welded pipes are divided into ordinary pipes and thickened pipes according to the specified wall thickness.
According to the main content of the production process, straight seam steel pipes can be divided into high frequency straight seam steel pipes and submerged arc welded straight seam steel pipes, and submerged arc welded straight seam steel pipes are divided into JCOE, UOE, RBE steel pipes according to their different forming techniques. The straight seam Welded Steel Pipe is formed by rolling a certain size of long steel into a round tube with a high-frequency welding machine, and then welding it with a straight seam, which depends on the sizing rolling after welding.
High-frequency welding of tubes does not require solder, there will be no welding spatter and welding shape design problems, and it has good welding mechanical properties. Welding by induction welding (or pressure direct contact welding). Therefore, the welding technology for producing straight seam steel pipes is very advanced, and the produced straight seam steel pipes have many advantages and are widely used.
High-frequency welding technology is based on the principle of electromagnetic induction and the analysis of the skin effect, proximity effect and eddy current heating time affect the alternating current conductor, so a part of the edge of the steel welding is heated to a molten state, and the butt weld is squeezed by the roller, thereby achieve the purpose of seam welding.
Product Name
| Welded steel pipe
|
Standard
| ASTM |
Material
| ASTM A691 Gr 11, ASTM A691 Gr.91, ASTM A691 9cr, ASTM A691 5cr, ASTM A691 1 1/4cr Cl22, ASTM A691m,
ASTM A691 Gr.5cr Cl22, ASTM A691 Cm70, ASTM A691 Class 22, ASTM A691 Class 42, ASTM A691-91, ASTM A691 Grade 2.1/4cr, ASTM A691 11/4cr Cl22
|
Technology
| Hot Rolled ,Cold Rolled, |
Chemical Composition
| C:≤0.15%
Si:≤0.5%
Mn:0.3～0.6%
P≤:0.25%
S≤:0.30%
Cr:4-6%
Mo:0.45-0.65% |
Mechanical Property
| Tensile Strength/MPa:415-585
Yield Strength/MPa:≥205 Elongation(%):≥18 |
Tolerance
| Control with in the standard, OD:+/-1%, WT:+/-5%
|
Application
| For low pressure fluids in engineered transportation systems |
Payment Terms
| 1.FOB 30%T/T,70% Before shipment
2.CIF 30% Pre-payment , Balance must be paid before shipment
3.Irrevocable 100% L/C at sight
|
Third Party Inspection
| SGS ,BV, MTC
|
Advantages
| 1.Short delivery time 2.Quality assurance 3.Competitive price, 4.Free Sample |
Delivery Time
| Within 25 days after receipt of advance payment |
Our products aye widely used in water engineering,petrochemical industry,chemical industry,electric power industry,agricultural irrigation,urban construction.
Used for liquid conveying:water supply and drainage.For gas transport:gas,steam,liquefier petroleum gas.
For structural use:as pile pipe,as a bridge;Pipes for wharves,roads and building structures.
Q: Are you a manufacturer?
A: Yes, we are steel pipe manufacturer, we have our own factory, located in Shandong, China.
Q: Can we visit your factory?
A: After a warm welcome to your schedule, we will pick you up.
Q: Do you have quality control?
A: Yes, we can accept BV and SGS three inspections.
Q: Can you arrange delivery?
A: Of course, we have permanent freight forwarders who can get the best price from most shipping companies and provide professional service.
Q: How long is your delivery time?
A: Generally 7-14 days if the goods are in stock. Or 25-35 days if the goods are not in stock, it is based on the quantity.
Q: How can we get the offer?
A: Please provide the specifications of the product, such as material, size, shape, etc., so that we can provide the best quotation.
Q: Can we get some samples? Is there a fee?
A: Yes, you can get samples available in our stock. Real samples are free, but customers need to pay for shipping.
Q: How do you keep our business in good long-term relationships?
A: 1. We keep good quality and competitive price to ensure the benefit of our customers.
2. We respect every customer as our friend, we sincerely do business with them and make friends, no matter where they come from.
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