Steel Pipe Exporter

#LSAW #Stock #List from Tianjin Xinyue #Steel Group. Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com Skype/WhatsApp/MP: +8618974849825

Differences between precision steel pipe and   seamless steel pipe ： 1. The main features of seamless steel pipe are welding without seam and can bear great pressure. The products can be made from rough casts or cold drawn parts. 2.Precision steel pipes appear just in recent years, and there are strict tolerance and roughness between the inner hole and the outer wall size. Cold drawn precision steel pipe features: 1). Have a smaller diameter. 2). Can be made in small quantities due to its high precision. 3). Finished cold drawn products have high precision and good surface quality. 4). The cross section of the steel pipe is more complicated. 5). The steel pipe has superior performance and its metal is relatively dense. Hot-rolled precision steel pipes are made from continuous casting round billets or roughed slabs which are heated by walking beam furnace and then put into rough mill after high-pressure water descaling; rough materials are sent into finishing mi...

The coating pipe of 3LPP consists of multiple layers of anti-corrosion coatings, the inner layer is welded epoxy layer, the middle layer is adhesive layer, and the outer layer is polypropylene layer.The inner layer is used for protection against corrosion and chemical damage while the outer layer is used for protection against any physical damage in laying and transportation. The 3 layer polypropylene coated pipes are used in oil fields where the resources are drawn from deep reservoirs and at high temperatures (100oC to 140oC). It is highly abrasion resistant and is generally used where the chances of damage are high such as Rocky Mountains or for drilling operations. Features of 3LPP coated pipes: 1. Excellent chemical and corrosion resistance preventing steel pipes from any damage. 2. Resistance to cathodic disbondment 3. The 3LPP coated pipes are highly abrasion resistant and can withstand high temperatures. 4. The 3LPP coated pipes have high performance characterist...

Seamless steel pipe are mainly produced by hot-rolled steel pipes. In addition to hot rolling, there are still cold-rolled or cold-drawn hot-rolled piers to produce small-size   seamless steel pipes . The proportion of seamless steel pipes in steel pipes has stabilized at 42 in recent years. %-45%, the welded pipe has a rising trend. Seamless steel tubes and welded steel tubes are more reliable and adaptable to the materials, especially for the production of thick-walled and alloy steels. The main problems are high investment, high costs, complex manufacturing processes, and large wall thickness and ovality tolerances. The welded pipe is actually a deep-processed plate product. Its cost and price mainly depend on the cost and price of the plate. Under the condition of similar prices, the market competitiveness of the seamless steel pipe is improved due to its strong reliability, with the quality of the steel plate. The continuous improvement and the improvement of the technical ...

It is important to understand the quality of the product you are going to buy, and here we will introduce some simple SA 213 boiler tube quality identification methods. First, low quality SA 213 boiler tube prone to fold. Folding is a variety of polylines formed by the surface of the SA 213 boiler tube, which often runs through the longitudinal direction of the entire product. The reason for the folding is due to the high efficiency of the poor manufacturers, the amount of pressure is too large, resulting in the ear, the next rolling to produce folding, folding products will crack after bending, SA 213 boiler tube strength decreased. Second, poor quality SA 213 boiler tube surface prone to scarring. There are two reasons: 1. Poor SA 213 boiler tube material is not uniform, more impurities. 2. Poor quality manufacturers guide guide equipment simple, easy to sticky steel, these impurities are easy to produce scar after the bite roll. Third, poor quality SA 213 boiler tube wi...

The   square steel pipe   is a term for square pipes which have the equal side length and rectangular pipes which have the unequal side length. The square steel pipe is made by the strip steel with the rolling process. Generally, the strip steel will be unpacked, flattened, curled and welded to be a round pipe, be rolled into a square pipe, and will be cut into the needed length. Square steel pipes are mainly used in fields including the mechanical industry, the chemical industry, shipbuilding, oil casings and pipelines for transporting water, gas, sewage, etc. The classification of square steel pipes according to materials According to materials, the square steel pipe can be divided into the common carbon steel square pipe and the low alloy square steel pipe. The classification of square steel pipes according to production processes According to production processes, square steel pipes can be classified into the hot rolled seamless square pipe, the cold drawn seaml...

The influence of   ssaw steel pipe   production process factors on the quality of single-side welding double-sided forming welds mainly includes welding current, welding speed, number of welding layers, electrode type and electrode diameter. 1. Welding current. The proper choice of the welding current size directly affects the final welding quality. Excessive welding current can increase the productivity and increase the penetration depth, but it is prone to defects such as biting and welding, and increases the tendency of stomata. In particular, when the vertical welding operation is difficult to control the molten pool, the occurrence of welding defects, arc length increases, the welding current is too small, the penetration depth is reduced, prone to defects such as incomplete penetration, poor fusion, slag inclusion, and disconnection. During the training, for those students who have just come into contact with welding, this is a difficult problem to grasp. During the...

As we all know, a company wants to survive in this competitive world, it needs to has its special characters. As steel pipe’s supplier, we would like to say that we have special production process for each kind of steel pipe from   seamless steel pipe   to SSAW steel pipe as well as ERW steel pipe. Step 1- We will introduce steel pipe’s market overview, market threats, and market prospects, driving factors. And we would customize relative products according to client’s demand. Step 2- Doing deep research on each kind of steel pipe’s character according to customer’s price structure, raw material cost, we would make a production plan for our customers. Step 3- Representing the procedure of the competitive steel pipe market among the manufacturer, with contracts, and income factor. We would start our production when we finish all plans as we need to give our customers a successful answer sheet. Check www.tjxysteel.com for more info. Contact Email: marketing@xys...

One type of oil or gas casing is composed of a steel pipe(like   seamless steel pipe ) for conveying medium. With anti-corrosion jacket, and an ultra-fine glass wool filled between the steel pipe and the jacket steel pipe, it would give guarantee for safety during the whole process of transportation. How to guarantee the quality of steel pipe during oil or gas transportation? 1. The technology of burying steel casing is a new technology for waterproofing, leak-proof, impervious, and fully-enclosed. It is a major breakthrough in the application of direct burial and laying technology in high groundwater table areas. 2. In addition to good mechanical strength, the oil casing is welded and connected due to its high strength. Its waterproof performance is very reliable. In addition, its high temperature resistance is also unmatched by other external protection pipes. In order to ensure that the groundwater does not affect the normal operation of the steam buried pipeline, the o...

Spiral welded steel tubes are widely used in oil, natural gas, water and other flammable & nonflammable liquid conveyance and distribution pipelines, steel structures for construction and other general purposes by means of their wide size range. a. Molding process, the steel deformed uniformly, spiral steel tube, residual stress, the surface does not produce scratches. Spiral steel tube processing diameter and wall thickness in the range of sizes for greater flexibility, especially in the production of high grade thick-walled pipe, spiral steel tube, especially small and medium-diameter thick-walled tube has advantages over other processes, to meet user specifications in steel demand more. b. The use of advanced double-sided submerged arc welding process, welding can be achieved in the best position, less prone to the wrong side, partial and incomplete penetration welding defects, easy to control weld quality. c. 100% of the steel quality inspection, so that the whole proc...

Technical requirements for spiral tubes 1. Manufacturing method (1) The use of hot-rolled steel belt to do billet, often temperature spiral molding, spiral seam using automatic submerged arc welding, internal and external submerged arc welds are not less than one. (2)   Steel pipe   on the allowable to the head of the weld, steel and the end of the pipe end of the distance of not less than 300mm. The purchaser negotiates with the manufacturer to allow the head weld to be at the pipe end, but there should be a circumferential distance of at least 150 mm between the head and the corresponding tube end screw candle. (3) Docking pipe allows the same specifications and the same type of two short section of a steel pipe, each section of the length of short steel pipe shall not be less than 2m, both sides of the ring weld seam should be staggered, the ring distance Less than 150mm. 2. The type of steel The scope of the standard steel pipe should be used GB / T700-1988 ...

Generally speaking, the   welded steel pipes   are divided into general welded pipe, galvanized welded pipe, oxygen welding tube, metric system welded tube, transformer tube, welding thin wall pipe and spiral welded pipe etc. General welded pipe: General welded pipe adopts Q195A, Q215A and Q235A or mild steel as raw materials. It is used to transfer the low pressure fluid. In addition, the pipes need water pressure, bending and flattening test etc. Usually, it has some certain requirements on the surface quality. The length of delivery is often from 4 to 10mm. The specifications of welded pipe in nominal diameter are different from actual size. Depending on the wall thickness, welded pipe are also divided into common steel pipe and thicken steel pipe. Galvanized welded pipe: In order to enhance the corrosion resistance, the general welded pipe is galvanized zinc as protective layer. Galvanized steel pipe has two types: hot dip galvanized pipe with thicken zinc layer and...

Requirements of   galvanized insulated steel pipe   in construction: 1, Galvanized insulated steel pipe is used for gas and natural gas, long-distance transmission of high pressure pipeline. 2. Galvanizing in order to preserve corrosion, in the long-distance transportation, the pole protection testing station is generally set up at several tens of kilometers to 100 kilometers. The instrument in the station generates cathode electrons to fill the pipeline, and the galvanized surface is conducive to conductive rust. The pipe is charged uniformly. 3, In order to prevent the loss of cathode electrons in the pipeline, the galvanized pipe is filled with electric tannin (mixture of bitumen and quartz powder) and kraft paper, second oil two paper or three oil three papers before installation. After head welding, it should be treated equally. The insulation resistance should be not less than 0.5 Mn, and check if the pipe is punctured with low voltage 380V/220V. 4. On the sid...

There are various steel pipes from   seamless steel pipe   to stainless steel pipe which can be used for transmission mission. What’s the difference for those pipes? How could we choose them for the engineering work? Today we would have a look at the different categories for water supply steel pipe and drainage pipelines. Taking building water supply as an example, we will discuss it specifically. First of all, the building water supply system would be classified with several types. They are living water supply system, production water supply system and fire water supply system. Different application would adopt different steel pipes. Then, talking about building drainage system. It is another situation we should think about. Due to the nature of the sewage discharged from the system, domestic sewage, industrial waste water and roofing would be main types of sewage. Under this situation, two or more types of combinations in a pipeline are called combined flow systems ...

Seamless stainless steel pipes   are the preferred choice for high-temperature applications across industries due to their several superior properties. They possess greater strength under loading, exhibit exceptional corrosion resistance, can withstand shocks and vibrations, and offer reliable performance even under the toughest and harsh conditions. Due to these benefits, seamless stainless steel tubes and pipes are used in heating-pipelines, containers, coal-saving devices, super-heaters and repeaters, high press boiler, heat exchanger and condenser tubes, mechanical and structural tubing, among several others. Grades of Stainless Steel Used in Producing Seamless Tubes and Pipes Steel tubes and pipes used for the high-temperature applications must be of superior quality to resist high temperatures ranging from 400 degree Celsius to 1100 degree Celsius. For this reason, manufacturers use the following grades of stainless steel to fabricate seamless tubes and pipes. 304/30...

Talking about industrial pipeline, some clients would say that it is   seamless steel pipe . Of course we have it for industrial pipeline. However, we should choose it according different work situation of the industrial pipeline. With different work situation, there are two main categories for industrial pipeline. They are process pipelines and power pipelines. Generally speaking, flow pipeline means the pipeline transporting the main material of the product, which is also called material pipe. And for power pipeline, I think we’ve heard it so much. They are steam pipe, air pressure pipe, nitrogen pipe and so on. Power lines affect the normal operation of production. For different physical and chemical characters of the products we need to convey, we should choose the relative pipe for it. Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com Skype/WhatsApp/MP: +8618974849825

According to the manufacturer's technical requirements, ASTM A213 P11   alloy steel pipe   has several methods to measure the length.Next I will introduce four main methods of measuring steel pipe length. 1, Grating Length Measurement The basic principle is that two fixed-length grating scales are respectively arranged on the two outer ends of the steel pipe, and the grating rod is driven by the rodless cylinder to be close to the two ends of the steel pipe to measure the length of the A213 P11 alloy steel pipe by using light interference phenomenon. Characterized by high accuracy. However, grating scales are expensive and difficult to maintain, and are sensitive to the effects of dust and site vibrations. 2, The Camera Measured Length. Camera length measurement is the use of image processing to achieve A213 P11 alloy steel pipe length measurement, the principle is in a section of steel pipe roller conveyor to install a series of equidistant photoelectric switch, ...

Xinyue exports thousands of tons of oil pipe worldwide, Middle East is the biggest oil pipe market in Xinyue’s records for 2016 worldwide exports data. The oil pipes are widely used in the manufacture of structural construction and mechanical industry, such as oil drill pipe and construction steel scaffolding. The oil pipe use of oil cracking tube manufacturing ring parts, it can simplify and take full advantage of the steel pipe.  The manufacturing processes is saving materials and processing hours, such as rolling bearing rings, Jack sets etc. Oil pie has been widely used as both   piling pipe   and for the purpose of transport oil and gas. Oil cracking tube is the different cross-sectional shape can be divided into round pipe and shaped pipe. Since the area of the oil cracking tube is the largest under circumstances of equal length, more fluid can be delivered with a round tube. So round hollow section oil pipe is the most popular one worldwide. Check www.tj...

Galvanized seamless steel pipe is a kind of steel pipe with a anti-corrosion zinc coating. This coating has many advantages over other methods used to protect steel and it makes galvanized steel pipe, fittings and other structures more desirable in many situations.  Below are the advantages associated for using galvanized seamless steel pipe.?  1. Fast assembly:   GI steel pipe , especially GI scaffolding, is easy to assembly 2. Low initial cost: cost for GI is much less than other anti-corrosion coating. 3. Lifespan: As GI is directly stick on pipe body, lifespan of both the pipe body and zinc coating will be longer than others.  4. Low maintenance costs: maintenance cost for GI steel pipe is very low.  5. Easy inspection: Inspection for GI pipe will be much easier than other steel pipes.  Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com Skype/WhatsApp/MP: +8618974849825

Comply with the requirements of ANSI/AWS D1.1, all welding should be performed by qualified welding operators or engineers.  Casing pipe from Tianjin Xinyue steel group have complete many projects worldwide since 2006.  Today, we’ll discusses about production standard, grade, steel no for casing pipe. For API 5L: API 5L PSL1 L175/A25, L210/A, L245/B, L290/X42, L320/X46, L360/X52, L485/X70  PSL2 L245R/BR, L290N/X42N, L320N/X46N, L360N/X52N, L415/X60N  For API 5CT: API 5CT PSL1, PSL2, PSL3, H40, J55, K55, N80  For Chinese market: GB/T 9711.1 L175, L210, L245, L290, L320, L360  GB/T 9711.2 L245NB, L290NB, L360NB  GB/T 9711.3 L245NC, L290NC, L360NC  For different market, there are different standard and steel grade to casing, but the most common seen one are API 5L and API 5CT. Xinyue has been equipped with API 5L and API 5CT   certifications . Xinyue is trust-worthy when it comes to casing.  Check www.tjxystee...