Saw Pipe, API 5L Steel Pipe, Seamless Pipe manufacturer / supplier in China, offering API 5L Saw Carbon Seamless Steel Pipe, ASTM A105 Rtj Weld Neck Flange, Blind Flange, Dn300, Pn10, ASME B16.47, 2.5 Inch Hot-DIP Galvanized Pipe A53 Standard Steel Pipe and so on.
|API 5L Saw Carbon Steel Pipe|
|Steel Material||ASTM A53/A106,API 5L,EN10216,DN1626|
|Steel Grade||Grade A,Grade B,Grade C,X42,X52.S235JRH,S355,P265 ect.|
|Process||Hot rolled/hot expansion/cold drawn/cold rolled|
|Usage||High temperature service|
|Surface||Bared Black Painting, Galvanized,Coating|
|Inspection||With Hydraulic Testing, Ultrasonic testing or X-ray Test|
|Date of Delivery||Less Than 15/20/25/30/40/50/60 Days According To The Quantity|
|Payment:||L/C or T/T|
|Port of Shipment||Xingang,China.|
The welded pipe is a round pipe welded by steel plate, which is divided into high-frequency resistance welded pipe (ERW welded pipe), straight seam arc welded pipe (LSAW) and spiral welded pipe.In electrical engineering, "SC" can be used as water gas pipe or threading pipe, which is thicker.2. The pipe pipe is also the wire pipe, which is relatively thin and represented by "T", and can only be used for threading.ERW steel pipeERW steel pipe3. ERW pipe is "high frequency resistance welded steel pipe", which is different from the welding process of ordinary welded pipe. The welding seam is melted from the base material of the steel belt body, and its mechanical strength is better than that of ordinary welded pipe.ERW stands for resistance welding, which is characterized by high production efficiency, low cost, material saving and easy automation. Therefore, it is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors, and is one of the important welding processes.
The biggest difference between ERW steel tube and seamless steel tube is that ERW has a weld, which is also the key to the quality of ERW steel tube.Modern ERW steel pipe production technology and equipment, due to the international, especially the United States and other years of unremitting efforts, so that the seamless ERW steel pipe has been a relatively satisfactory solution.Some people have divided the seamless ERW steel pipe into geometric seamless and physical seamless.Geometric seamless is the removal of ERW steel tube internal and external burrs.Due to the continuous improvement of the structure of the internal burr removal system and the cutter, the internal burr removal of large and medium diameter steel tubes has been well handled.The internal burr can be controlled around -0.2mm~ o. 5mm.Physical seamless refers to the difference between the metallographic structure inside the weld and the base metal, which leads to the decrease of mechanical properties in the weld area. Therefore, measures should be taken to make it uniform and uniform.The high frequency welding heat process of ERW steel tube causes the temperature distribution gradient near the edge of the billet, and forms characteristic regions such as melting zone, semi-melting zone, superheated structure, normalizing zone, incomplete normalizing zone and tempering zone.The overheated zone tissue due to welding temperature above 1000 ℃, the austenitic grain size grew up sharply, under the condition of cooling can form the coarse grain of hard and brittle phase, furthermore the existence of the temperature gradient can produce welding stress.Thus formed the mechanical properties of the weld area is lower than the parent metal, physical seamlessly is weld local conventional heat treatment process by using medium frequency induction heating device is the area of the welding heat in the AC3 (927 ℃), and then to 60 m length and speed in air cooling process of 20 m/min, water-cooled again when necessary.This method can eliminate stress, soften and refine the structure, and improve the comprehensive mechanical properties of the welding heat affected zone.So far, the advanced ERW units in the world have generally adopted this method to deal with the welding seam, and good results have been achieved.High quality ERW steel tube not only cannot identify the weld, but also the weld coefficient reaches 1, realizing the matching of the weld area structure and the base material.
Product manufacturing process
Certifications of product
Packaging and transportation
Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.
No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.
has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
Why to choose us?
1.We provide products to our customers individual specifications and special needs with competitive price and best service.
2. Immediate respond
We will be 24/7 on line at your services. Provide one-to-one service with our sincerity.
3. Professional suggestions
We could provide you the professional suggestion with our expertise acumen.
4. Short delivery period
We are based on a long-term cooperation with several major domestic steel company with an outstanding advantage is sufficient supply. Shorter the supplying period.
Edit by Ms. Vicky of CSPG
Contact us directly by:
Email: firstname.lastname@example.org ,email@example.com
Tel / Whatsapp: +86-180327140146