45# thick wall welded pipeOffer summary

Continuous pipe products are widely used in petroleum, chemical industry, natural gas transmission, pile driving, urban water supply, heat supply, gas supply and other projects. The detection of thick wall continuous pipe is mainly ultrasonic flaw detection. The longitudinal weld of the same barrel section of thick wall continuous pipe shall not exceed two passes. The butt weld of thick wall continuous pipe shall be flush with the. When the nominal diameter is larger than, back sealing welding shall be carried out in the pipe. In the process of pipe rolling, the rolling quality of pipe, Q235B rolling, Q345B rolling, large diameter thin wall rolling, large diameter thick wall rolling, stainless steel rolling, L360 rolling and 16Mn rolling were analyzed. Professional hot rolled steel pipe, large diameter thick wall rolling pipe, thick wall straight seam rolling pipe, steel casing, rolling pipe factory, excellent quality and low price, fire resistance - Waterproof - high temperature resistance, strong and durable safe and reliable

Recently, with the rapid development of excellent strip continuous rolling production and the progress of welding and inspection technology, the weld quality has been continuously improved, and the application field is relatively wide, so as to gradually replace the seamless steel pipe. The main one is the technological development of welded pipe. Our welded pipe is made of steel plate or strip steel and welded after crimping. It is generally a welding process, which improves the production efficiency and service quality of welded pipe.

.Meet the requirements of American Petroleum Institute standards.

Thick wall coiled pipe is made of steel plate. Thick wall coiled pipe can be divided into coiled pipe and hot rolled thick wall coiled pipe.

.The pipe volume is huge, the production site environment is complex, and the measurement cannot pass through the lower support bench of the steel pipe. This operation is convenient and the measurement accuracy is within & plusmn; Within 10mm, repetition accuracy ≤ 5mm. Thick wall coiled pipe is made of steel plate. Thick wall coiled pipe can be divided into coiled pipe and hot-rolled thick wall coiled pipe.

The distance between the two longitudinal slits of the reel assembly shall be greater than 100mm. The distance between the outer wall of the branch pipe and the weld shall not be less than 50mm.

Diameter of rolled steel pipe: sometimes the diameter of the demand plan is different from that of the supplier.

In the production process, the hot-rolled steel pipe has the characteristics of no raw materials, that is, the mechanical properties of thick wall steel plate. In this way, the steel plate is heated first and then rolled, which softens the steel plate under great conditions, which will not affect the material quality, nor damage the properties such as strength, yield and tensile strength. For the wall thickness that can not be achieved by cold rolled steel pipe, the specification and model of thick wall steel pipe are added.

How about thick wall coiled pipe? Generally, chemical and electrolytic pickling are used for pickling treatment. Only chemical pickling is used for thick wall coiled pipe, which can remove oxide scale rust and old coating. Sometimes it can be used as reprocessing after sand blasting. Although chemical cleaning can make the surface reach a certain cleanliness and roughness, its anchor lines are shallow and easy to pollute the environment. Under the action of abrasive impact and force, the steel pipe can also achieve the required uniform roughness.

Steel plate materials mainly include Q235, Q345, 20, 45, 35cimo and 42cimo, with 16 manganese and 16 manganese capacity. Generally, cold rolled plate can be used for pipe winding. Like oil, chemicals, heating piling and urban water supply, gas supply and other projects can be customized! The required thickness and length can be adjusted as required! The rolling pipe weld is a double-sided weld. Two longitudinal welds are allowed, and the weld spacing exceeds 300 mm. The welding appearance and quality standard shall not be lower than the level standard in the welding specification.

average method.The butt joint of coiled pipe (with the same wall thickness) shall not exceed 10% of the wall thickness and not more than 2mm.

Move the steel pipe twice to weld and reinforce the rolled pipe joint, and then transport it to the welding platform for welding.

Flame cutting and plasma cutting are commonly used for sheet metal blanking in our factory. The equipment used includes manual cutting, copier,45# straight seam welded pipe,Q550b large diameter welded pipe, semi-automatic cutting machine and NC cutting machine. Manual blanking is arbitrarily large compared to other cuts Flexible and convenient, no special supporting cutting equipment is required.

It should be noted that in practice it is difficult to achieve the ideal proportion of metal sand and metal ball in the rinsing agent, because the hard and brittle metal sand has a higher crushing rate than the metal ball. For this reason, the new rinse agent is added to the cleaning machine, and the amount of metal sand is usually the same in the new rinse agent.

Production department.The offer is in progress. Welcome new and old customers to consult. Prevent surface damage of steel plate. Thick wall coil and large diameter coil are mainly made of carbon steel,45# large diameter welded pipe, Q19 q23 q34 16Mn etc. coil is a kind of welded pipe product with simple and flexible process. If the length required by the customer is special, two or more steel pipes must be connected. Therefore, the process of this welded pipe is flexible, which requires a lot of manual processing. The main problem of coiled pipes is welding. Thick wall coiled pipes can be delivered as long as they can be inspected by flaw detection. The relevant requirements are broader than other products.

Purpose of steel plate rolling: steel plate rolling is mostly used in large-scale steel structure construction as the main support part, such as bridge piling, seabed piling and high-rise building piling. Its material: Q345C. Q345D and Q345E are also used in low temperature areas.

The distance between the two longitudinal slits of the reel group shall be greater than 100mm. The outer wall of the branch pipe shall be longitudinal, and the circumferential weld shall not be less than 50mm.

.Hot melt installation: pipes are connected according to the nature of thermoplastic coiled pipes. During hot melt, special heating equipment (generally electric heating type) is used to make the connecting surface of coiled pipes of the same material and pipe fittings reach the molten state, and they are pressed together manually or mechanically. This method is closely combined, safe and durable, and avoids water running, emitting, dripping and leakage at the joint of metal pipe fittings.

The butt joint of coiled pipe (with the same wall thickness) shall not exceed 10% of the wall thickness and not more than 2mm.

In addition, when the pipe rolling equipment is made, we should not have more than two longitudinal welds on the same cylinder section of the pipe rolling. For long-term pipe rolling, Q235B pipe rolling, Q345B pipe rolling, large-diameter thin-wall pipe rolling, large-diameter thick wall pipe rolling, stainless steel pipe rolling, L360 pipe rolling and 16Mn pipe rolling, the products are complete, the quality is excellent and the price is favorable. The distance between the two longitudinal welds should not be less than 200.