Welding Pipes Procedure – China supplier of Welded Pipes

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Process piping has its own unique requirements and challenges. Welders must adhere to strict codes when welding in these applications, as well as take precautions to avoid potential defects like lack of fusion, porosity, or other weld defects that could compromise the integrity of the completed weld.

As a means to gain a competitive advantage, some welders have chosen to move away from the shielded metal arc welding (SMAW) or gas tungsten arc welding (GTAW) processes common in this industry and convert to wire processes.

Advanced technologies like modified short-circuit GMAW or pulsed gas metal arc welding (GMAW-P), as well as conventional GMAW and flux-cored arc welding (FCAW), can help speed production, ease training, and produce high-quality welds in process pipe applications.

Some welders may find that using a solid or metal-cored wire for the root to cap passes provides the most productivity, while others may require a combination of other processes. Whatever the decision, it is critical to select high-quality filler metals for the job to prevent potential defects and ensure the weld quality and productivity needed to gain a competitive advantage from a wire process.

this article is published by China manufacturer and supplier of welding pipes – SHENGYI INDUSTRY CO.,LTD.

see welding pipes products, please visit http://www.syweldedpipe.com/

Welding Pipes With Different Wall Thickness – China Manufacturer of Industrial Welded Steel Pipe

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Welding Pipes are made of carbon, carbon-manganese, alloy steels or non-ferrous material. The direct connections of Welding Pipes lengths may be made by direct welding, flanges, threaded joints or mechanical joints.

Different Wall Thickness Welding Pipes can be used for Air, vapour, gas (excluding liquefied gas cargo and process piping), water, lubricating oil, fuel oil, hydraulic fluid systems for steering gear, toxic gas and liquids, cargo oil and tank cleaning piping and open ended lines such as drains, overflows, vents and boiler escape pipes.

Welding Pipes Advantages
1. The external diameters and thicknesses have been selected from ISO Recommendations for smooth welded and seamless steel pipes.
2. Diameter and thickness according to other national or international standards may be accepted.
3. Welding Pipes can to be galvanized inside.

Wuxi shengyi industry co., ltd. is specialized in manufacturing welding pipes with different wall thickness. welcome to do business with us.

this article is published by China Welding Pipes manufacturer and supplier – Wuxi shengyi industry co., ltd.

Solvent Weld Pipe – China manufacturer of welding tubes

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Solvent Weld Pipe Advantage

1. High Heat Resistance, corrosion resistance;
2. Heat insulation properties, smooth wall surface to reduce invasion of microbes and other foreign particles;
3. Compliance with the dissolution test, electrical insulation properties;
4. Cold bonding of cement allows simple and economical installation;

when Solvent Welding in High Temperatures:

1. Store solvent cements and primers in a cool or shaded area prior to use.
2. Cool surfaces to be joined by wiping with a damp rag.
3. Make sure that the surface is dry prior to applying solvent cement.
4. Make sure that both surfaces to be joined are still wet with cement when putting them together.
5. Using a primer and a heavier, high-viscosity cement will provide a little more working time.
6. Be aware of possible expansion-contraction movement due to large changes in temperature.

Wuxi shengyi industry co., ltd. is specialized in manufacturing Solvent Weld Pipe with high quality, high precision. welcome to do business with us.

this article is published by China Solvent Weld Pipe manufacturer and supplier – Wuxi shengyi industry co., ltd.

Welding Pipeline – China manufacturer of Welding Pipeline

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Welding Pipeline Product Description

Outer Diameter: 1/8 – 20 inch (10.3 – 508 mm) ERW / HFW Welding Pipeline; 12 – 56 inch (310 – 1,420mm) LSAW / DSAW Welding Pipeline; 8 – 126 inch (219.1 – 3,200 mm) SSAW Welding Pipeline.

Wall Thickness: 0.4 – 16 mm ERW / HFW Welding Pipeline; 6.0 – 60 mm ERW / HFW Welding Pipeline; 6.0 – 26 mm SSAW Welding Pipeline.

Length: upon customers’ requirements.

Standard: GB/T 3091, GB/T 13793, ASTM A252, ASTM A53, ASTM A500, EN 10210, EN 10219, API 5L, DIN 1626/1615, DIN 17120, etc.

Surface: Prime quality (bared, oiled, color paint, 3LPE, or other anti-corrosive treatment), black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE, etc.

Inspection: With Chemical Composition and Mechanical Properties Analysis; Dimensional and Visual Inspection, also with Nondestructive Inspection.

Application: structure, electric power transmission tower projects, piling, water, oil & gas pipeline engineering, mechanical industry, municipal projects, roads and its auxiliary facilities, etc.

SHENGYI INDUSTRY CO.,LTD. is specialized in manufacturing Welding Pipeline. welcome to do business with us.

this article is published by China Welding Pipeline manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

Stainless Steel Welded Pipe – China manufacturer of welding pipes

Stainless Steel Welded Pipe Manufacturing Process

The Stainless Steel Welded Pipe Manufacturing Process commences with the formation of welded mother tube on the tube mill from imported and tested prime quality stainless steel strips.

Latest, electrode welding technique is employed for superior weld quality and 100% Fusion, with argon purging, No filler metal added.

These mother tubes are solution annealed at 1060℃ and 1100℃ in continuous annealing furnace followed by immediate quenching to prevent chromium carbide precipitation.

During annealing, scales are formed on the surface of the tubes. In order to remove these, the tubes are pickled by immersing into hot pickling solution made of nitric acid, sulphuric acid and hydrofluoric acid.

Drawing is followed by subsequent annealing and pickling to restore the properties of the entire tube to that of the parent material.

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SHENGYI INDUSTRY CO.,LTD. is specialized in manufacturing Stainless Steel Welded Pipe with high quality, best price.

this article is published by China Stainless Steel Welded Pipe manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

Electric Fusion Welded Pipe – China Welding Pipes manufacturer

Electric Fusion Welded Pipe Specification

1. Material: 20#, 45#, Q195, Q215, Q235, 16Mn, Q345, etc.
2. Standard: API 5L, ASME, ASTM B36, JIS, DIN, GB8162, GB8163, GB5310, etc.
3. Length: 6-15m, as customers required.
4. Out Diameter: DN10~DN1200, 1/8″~100″, 6mm~2400mm.
5. Wall Thickness: SCH5~SCH160, STD, XS, XXS, 1mm~120mm.
6. Technique: Seamless & welded.
7. Surface treatment: Black painting, black varnish, transparent oil, hot galvanized, 3PE, epoxy coating, BE, PE, etc.

Electric Fusion Welded Pipe Usage

1. Water, petroleum, natural gas transportation.
2. Aerospace, shipbuilding, automobile manufacturing.
3. Boiler, coal, chemicals.
4. Low and middle pressure fluid transportation pipeline.

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SHENGYI INDUSTRY CO.,LTD. is specialized in manufacturing Electric Fusion Welded Pipe with high quality, best price.

this article is published by China Electric Fusion Welded Pipe manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

Spiral Welded Pipe from China Welding Pipes manufacturer

Spiral Welded Pipe Process

The welding of the spirally welded pipes is based on the Double-Sided Submerged Arc Welding (DSAW) process.

DSAW’s better penetration makes it possible to achieve higher weld travel speeds without impairing quality, thus improving productivity and lowering costs.

The first welding pass is done by using a DC arc, to achieve a large and concentrated penetration. The second pass is done by using an AC arc, to achieve better deposition rates.

The result of the multi arc welding on both sides of the coil is a full penetration weld of a very high quality produced in a cost effective way.

Spiral Welded Pipe can be used for Fluid pipe, Power Plant, Structure pipe, High and low pressure Boiler tube, Conduit pipe, etc..

China leading manufacturer of Spiral Welded Pipe, welcome to do business with us.

this article is published by China Spiral Welded Pipes manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

longitudinal seam welded pipe from China welding pipes manufacturer

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Brief Details of Longitudinal Seam Welded Pipes

Standard: API, DIN 1629, DIN 17175, GB8162, GB8163, GB5310, etc..
Material: ASTM A106 GRB/ A53 GRB/ Q345/ Q235/ A335/ ST37/ ST52/ 20#/ 10#/ API 5L GRB, PSL1, X42, X52, etc..
Size: 1/2″ to 48″, ND: 15 to 1200.
Length: 1 to 12 meters.
Wall Thickness: Sch10~Sch160, XXS, XS, STD, SGP, etc..
Surface Treatment: Black painting / coating, black rust-proof oil, hot galvanizing, 3PE, epoxy coating.
Packing: Plastic cap for both end, steel strips bundled.

Longitudinal Seam Welded Pipes Features:

Oiled marking:
Steel after passing wrer oiled to prevent corrosion,and according to user requirements for making.

Leveling Milling:
The flat steel anvil machine so that the origal curl, and then thouth the edge milling machine for two-sided steel milling, so as to meet the requirements of the plate width, plate edge parallelism and groove shape.

Shear molding:
The steel plate production line along the outer edge of the spiral curl into a tube.

Butt cut:
Double-sided submerged arc welding using advanced technology to pre-welding, internal welding, outside wilding. The welded steel pipe using a plasma-foot cut to specification length.

SHENGYI INDUSTRY CO.,LTD. specializing in longitudinal seam welded pipe, manufacture high precision longitudinal seam welded pipes to meet customer’ requestments. welcome to do business with us.

this article is published by China longitudinal seam welded pipes manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

welded pipe manufacturing process – China welded pipes manufacturer

The oldest welding pipe process is bend the material and connect its edges in order to manufacture tube and pipe.

Then the welded pipes process consisted of forging individual metal plates over a mandrel to produce an open-seam pipe, and then heating the mating edges of the open seam and welding them by pressing them together mechanically in a draw bench.

And following the far-reaching developments which have occurred in the energy sector in the last 30 years, and the resultant construction of large-capacity long-distance pipelines, the submerged-arc welding pipes process has gained a position of pre-eminence for the welding of line pipe of diameters upward of approx.

welded pipe manufacturing process main include tow process that pressure welding processes and Fusion welding processes.

The test of Welded Pipes include Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT.

SHENGYI INDUSTRY CO.,LTD. have professional welded pipe manufacturing process to manufacture high quality welding pipes. Welcome to do business with us.

this article is published by China Welding Pipes manufacturer and supplier – SHENGYI INDUSTRY CO.,LTD.

thick walled welded pipe from China Steel Tube Manufacturer

SHENGYI INDUSTRY CO.,LTD. specializing in the most efficient and affordable welding technique to weld and repair thick-walled pipes, without compromising weld quality.

We manufactured Thick Walled Welded Pipes can be used as Construction pipe, machine structure pipe, Agriculture equipment pipe, Water and gas pipe, Greenhouse pipe, Scaffolding pipe, Building material tube, Furniture tube, Low pressure fluid tube, Oil pipe, etc..

Thick Walled Welded Pipes Features

1. Reduced weld volume and shorter welding time.
2. Lower heat input and less residual stresses.
3. Less consumption of filling material and shielding gas.
4. Improved weldment properties.
5. Lower incidence of weld metal defects.

Thick Walled Welded Pipes Surface Treatment

1. 3PE.
2. PVC, black and color painting.
3. Transparent oil, anti-rust oil.
4. According to clients requirement.

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China professional manufacturer and supplier of thick walled welded pipes, if you are interested in thick walled welded pipe, please contact us.

this article is published by China Thick Walled Welded Pipe manufacturer – SHENGYI INDUSTRY CO.,LTD.