Seamless steel pipe exporter

Seamless steel pipe   is one of the important products in OCTG products. It is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and construction of steel scaffolding and so on. Comparing with the other steel pipe, seamless steel pipe has stronger anti-bending and torsional ability under the condition of the same cross section area. It is widely used in the national economy, and is entitled to the "industrial blood vessel". Therefore, the quality of seamless steel pipe has very demanding requirements. Seamless steel pipe inspection generally include: inspection geometry, surface quality; test chemical composition, mechanical properties, process performance, high and low times of the organization; NDT inspection; some special performance inspection and weighing length measurement. Here we will introduce you non-destructive testing Under the premise of not damaging the specimen, N...

The internal and external area of the pipe can both be corrosive because of different factors. The external pipeline corrosion can mainly due to the surroundings, such as acid soil, wet conditions and so on. Factors that lead to internal corrosion are the oxygen content, temperature, pressure and flow rate of the liquid carried in the pipelines. Due to the above reasons, the anti-corrosive pipeline coating can be put into two corresponding categories, the internal and external corrosion-resistant coating. Internal anti-corrosion coating Oil and gas liquid carried by the pipelines contains various chemical solid particles, some of which dissolve in the fluid while some remain. Those chemical particles remaining in the fluid travel in the pipe at a high speed, therefore, the internal coating is supposed to withstand friction caused by the fast moving particles. Besides, the internal coating material is expected to have a low surface roughness, thus, increasing the flow efficiency ...

Requirements for API 5L X52   seamless tube   in standard. 1. there are no cracks, wrinkles, wrinkles, spalling, crusts and scales on the inside and outside surfaces of the steel pipes. These defects should be completely eliminated. The grinding of surface defects should be smooth and smooth. The depth of clearance should not exceed the negative deviation of nominal wall thickness. The actual thickness of the defect removal zone should not be less than the minimum allowable wall thickness of the steel tube. The welding method should not be used. 2. the straight path of the inside and outside surface of the steel pipe must be grind. The depth of clearance should not exceed the negative deviation of nominal wall thickness. The actual thickness of the defect clearance area should not be less than the allowable minimum wall thickness of the steel pipe. 3. end shape: cut both ends of the steel pipe into right angles and remove burrs. The welding interface is not allowed ...

First, anti-corrosion of   seamless steel pipe Seamless steel pipe corrosion according to the requirements of the drawings, the use of epoxy coal tar lacquer outsourcing glass fiber cloth, painted topcoat anti-corrosion. The construction process of the outer wall: pipeline rust removal → coating primer → first time paint → second time paint → glass fiber cloth → topcoat; The inner wall construction process flow: pipeline rust removal → priming → first pass paint → second pass paint → third pass paint Corrosion requirements: 1, Pipeline rust removal the surface of the pipe should be cleaned of grease, ash, rust, and oxide scale before being primed. The use of sand blasting rust quality standards Sa2.5. 2. The surface of the pipe shall be rusted and then primed. The time interval shall not exceed 8 hours. When the primer is applied, the base surface shall be dry. The primer brushing is uniform and full, and there should be no clotting or foaming phenomenon. No brushing...

No matter which kind of steel pipe we engineering project takes, stainless steel pipe,   seamless steel pipe , welded steel pipe or others, it is an important lesson for us to have precautions for steel pipe users need to pay attention to. There are some examples for clients: First of all, to make ensure the safe operation of oil or gas, or prevent accidents from expanding in the event of an accident,we need to take some special safety measures except the basic installing detect and control. For example, there should be an accident relief valve or an emergency stop valve for the seamless steel pipes which used for long distance oil or gas transmission. What's more, due to the parameter of the steel pipes, we should take original material into account when we consider the problem of the adhesion of the anti-corrosion layer. Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com Skype/MP/WhatsApp: +8618974849825

In daily steel procurement, the most irritating and irritating thing is the purchase of inferior seamless steel tubes, which affects product quality. How to identify inferior   seamless steel pipe ? Here we identify through the following methods: 1, poor quality seamless steel pipe surface is prone to scarring. Mainly due to two reasons: (1) There are many impurities in the inferior seamless steel tubes and the materials are not uniform. (2) Inadequate guide equipment for poor quality pipe manufacturers is particularly prone to sticking steel. Contaminated pipes tend to produce scars when they bite into the roll. 2, poor quality seamless steel pipe is prone to tube folding. The so-called folding is a variety of fold lines formed on the surface of the seamless steel pipe, and this defect often runs through the entire product. The reason for the folding is that the manufacturer is pursuing high efficiency in order to increase the output. In the production process, the ...

SMLS steel pipe   is mainly used for petrochemical cracking tube, boiler tube, pipe and automotive bearings, petroleum geology drilling pipe, tractors, aviation and other precision structural tube. Small OD SMLS steel pipe is widely used for both side submerged arc welded manufacturing technology. Small OD SMLS steel pipe’s manufacturing process can be bending, internal welding, commissural, external welding, straightening, flat top multi-channel, etc, to achieve API standards. Large OD with thick wall can be used in all kinds of construction site and make the body supporting portion. For example bridge support, offshore piling, and other building pile.Also, it can also used for liquid transportation. Tips: Carbon steel pipe weight formula is [(OD - WT) * WT] * 0.0246615 = kg / m (weight per meter) Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com Skype/MP/WhatsApp: +8618974849825

Seamless stainless steel pipes   treatment technology refers to the processing of achieving uniform silver with metallic luster. This is generally referred to the production of large seamless stainless steel pipes. Because large seamless stainless steel pipes is manufactured through stamping, folding and welding process, the surface of workpiece has oil, rust, macular, which is neither beautiful, and easy to rust, reducing its stainless steel quality and value. To make seamless stainless steel pipes achieve the standard, the surface must be finished. After forming matte treatment, that can achieve beautiful appearance, but also improve its anti-corrosion and anti-discoloration performance. After the above method, the corrosion resistance of stainless steel seamless pipes can be increased by 2 to 3 times. Seamless stainless steel pipes does not rust due to the existence of chromium, nickel components, and then through the matt treatment, not only can eliminate the matrix impu...