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Wholesale Stainless Steel Pipe – De-kalidad na Stock mula sa Maaasahang China Factory Direct

Stainless steel pipes are mainly divided into two categories: seamless stainless steel pipes and welded stainless steel pipes. Their shapes include round, square, rectangular, and oval pipes. According to their uses, they can be divided into industrial fluid pipes, boiler heat-resistant pipes, precision instrument pipes, building decoration pipes, and sanitary food-grade pipes. Commonly used materials include 201, 304, 316L, 321, 310S, and 2205.

Stainless steel pipes have outstanding practical advantages. They have strong rust and corrosion resistance, are not afraid of acids, alkalis, humidity, and coastal salt spray environments, and are not easily oxidized and damaged. They have excellent high and low temperature resistance, stable performance under cold and hot environments, and are not easily deformed or cracked. The inner wall of the pipe is smooth, resulting in low resistance to the transported medium, preventing scaling and blockage, and ensuring high flow efficiency. The material is safe, non-toxic, clean, and hygienic, suitable for drinking water, food, and pharmaceutical transportation. They have high overall mechanical strength, strong pressure resistance, are durable, and have a service life far exceeding that of ordinary pipes. They are also easy to cut and weld, convenient to install, and have low maintenance costs. They are widely used in many fields such as chemical, heating, municipal plumbing, machinery equipment, and environmental protection engineering.


Comparison Table of Common Stainless Steel Welded Pipe Material Parameters

Material Types:

Core Performance Characteristics

Applicable Temperatures

Main Application Scenarios

Value for money

201

Weak rust resistance, good toughness, easy to process, moderate corrosion resistance

Normal Room Environment

Building decoration, railings, shelves, general household pipe fittings

Lowest price

304

Excellent overall corrosion resistance, strong versatility, easy to weld and form

≤450℃

Water supply and drainage pipes, food processing pipes, general industrial fluid pipes

Highest value for money

316L

Molybdenum-added corrosion resistance, strong resistance to chloride ions, acids, and alkalis

≤500℃

Chemical fluids, seawater transportation, medical equipment pipe fittings

Moderate to high price

321

Titanium-containing structure stabilizes, resists intergranular corrosion, good weldability

≤600℃

Boiler pipes, heating pipes, high-temperature welded pipe fittings

High price

309S

Excellent high-temperature resistance and oxidation resistance

900-980℃

High-temperature flues, heat treatment furnace piping, heat-resistant air ducts

Relatively high price

310S

Ultra-high temperature resistance, top-tier oxidation resistance

1000-1150℃

Incinerator pipes, high-temperature kiln pipe fittings, high-temperature exhaust gas pipes

Extremely high price

2205 Duplex

High strength, resistant to stress corrosion and high-chlorine corrosion

Medium-High Temperature and Strong Corrosion Environment

Desulfurization pipes, marine engineering, high-salinity wastewater transportation pipes

High-end and expensive

Stainless Steel PipeStainless Steel PipeStainless Steel Pipe


What is the price of a 20-foot stainless steel pipe?

For stainless steel pipes of the same material and outer diameter, the thicker the wall, the more material is used and the greater the weight, resulting in a higher price. Thin-walled pipes are cheaper, while thick-walled pipes are more expensive. For common 304 stainless steel welded pipes, a 25mm outer diameter and 2mm wall thickness costs approximately $16, a 50mm outer diameter and 3mm wall thickness costs approximately $49, and a 108mm outer diameter and 4mm wall thickness costs approximately $147. These prices are for reference only. Seamless pipes of the same specifications are slightly more expensive than welded pipes. Prices for all types of pipes steadily increase with increasing wall thickness.


What is the service life of stainless steel pipes?

The service life of stainless steel pipes is not fixed and depends mainly on the material grade, usage environment, wall thickness, processing technology, and maintenance. The typical range is from 10 years to over 100 years. Below are specific lifespan data and key influencing factors for different scenarios:


Service Life of Different Materials

Material

Dry indoor environment

Typical outdoor environment

Chlorine-containing environments (e.g., coastal areas)

Highly corrosive environments (chemical/seawater)

201

20-30 years

10-20 years

5-8 years (requires frequent maintenance)

1-3 years (not recommended)

304/304L

50-100 years +

30-50 years

15-30 years

5-15 years

316/316L

70-100 years +

40-60 years

30-50 years +

15-30 years +

321/310S

60-100 years +

40-50 years

25-40 years

20-30 years

2205 Duplex Stainless Steel

70-100 years +

50-70 years +

50 years +

30-50 years +

Stainless Steel PipeStainless Steel PipeStainless Steel Pipe


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2507 Hindi kinakalawang na Asero Welded Pipe

2507 Hindi kinakalawang na Asero Welded Pipe

Ang mga tagagawa ng 2507 stainless steel welded pipe ay may sapat na imbentaryo, na may mga panlabas na diameter mula 16-219mm, kapal ng pader mula 0.8-6mm, at karaniwang haba na 6 na metro. Available ang mga custom na laki at haba kapag hiniling. Sinusuportahan ang polishing at brushing treatment. Ang mga tubo na ito ay malawakang ginagamit sa flue gas desulfurization, seawater engineering, at mga pipeline para sa mabibigat na nakakaagnas na mga kemikal.
2205 Hindi kinakalawang na Asero Welded Pipe

2205 Hindi kinakalawang na Asero Welded Pipe

Available ang 2205 stainless steel welded pipe sa mga panlabas na diameter na 10-3000mm, kapal ng pader na 0.5-30mm, at karaniwang haba na 6m/12m. Ang mga proseso ng welding ay pangunahing TIG/MIG, na may pag-aatsara sa ibabaw at pagwawalang-bahala. Kasama sa mga paraan ng koneksyon ang welding at flanges. Available ang custom na pagproseso sa maikli at maaasahang mga oras ng paghahatid.
254 Hindi kinakalawang na Asero Welded Pipe

254 Hindi kinakalawang na Asero Welded Pipe

Ang 254 stainless steel welded pipe, karaniwang kilala bilang 254SMO welded pipe, ay isang uri ng super austenitic stainless steel welded pipe, na naaayon sa UNS number S31254 at German grade 1.4547. Ito ay kabilang sa 6-molybdenum super stainless steel series at pinangalanan para sa humigit-kumulang 6% na nilalaman ng molybdenum. Ito ay hindi isang duplex steel, ngunit isang high-alloy austenitic stainless steel, na nagtataglay ng napakataas na pagtutol sa pitting corrosion, crevice corrosion, at stress corrosion cracking.
309S Stainless Steel Welded Pipe

309S Stainless Steel Welded Pipe

Ang 309S stainless steel welded pipe ay may mataas na chromium at nickel na nilalaman, mahusay na mataas na temperatura na resistensya, at maaaring makatiis ng mga temperatura hanggang sa 1000 ℃ para sa pinalawig na mga panahon. Nagpapakita rin ito ng malakas na pagtutol sa mataas na temperatura na oksihenasyon at thermal fatigue. Pinagsasama ang mahusay na paglaban sa kaagnasan at kakayahang magamit, hindi ito madaling kapitan ng pagpapapangit at pag-crack sa mga kapaligiran na may mataas na temperatura. Inirerekomenda ng mga nangungunang Chinese stainless steel welded pipe ang 309S bilang isang angkop na pagpipilian para sa medium-at high-temperature na pang-industriyang pipeline tulad ng mga high-temperature na tambutso, pang-industriya na tapahan, at heat treatment equipment.
321 Hindi kinakalawang na Asero Welded Pipe

321 Hindi kinakalawang na Asero Welded Pipe

Ang 321 stainless steel welded pipe ay may kasamang titanium, na epektibong pumipigil sa intergranular corrosion, na ginagawa itong mas madaling kalawang at basag pagkatapos ng welding, at nagpapakita ng mahusay na thermal stability. Ito ay may mahusay na mataas na temperatura na pagtutol, ay hindi madaling deformed sa ilalim ng alternating mainit at malamig na mga kondisyon, ay may mahusay na plasticity para sa madaling pagproseso at pagbuo, at malakas na paglaban sa pagkapagod. Inirerekomenda ng mga tagagawa ng Chinese stainless steel na welded pipe ang 321 na materyal bilang isang angkop na pagpipilian para sa boiler piping, thermal equipment, at high-temperature heat exchange pipelines.
310S Stainless Steel Welded Pipe

310S Stainless Steel Welded Pipe

Ang pangunahing bentahe ng 310S stainless steel welded pipe ay ang mataas na temperatura na resistensya nito, na may kakayahang patuloy na makatiis sa 1150 ℃ at panandaliang makatiis ng 1200 ℃. Ang nangungunang Innovation Factory sa China ay karaniwang nag-iimbak ng mga sumusunod na detalye: panlabas na diameter 16-219mm, kapal ng pader 0.8-5.0mm, karaniwang haba 6 metro, at sumusuporta sa mga custom na order.
Ang Lingchuang ay isang propesyonal na Hindi kinakalawang na asero Pipe tagagawa at supplier sa China. Maligayang pagdating sa pag-import ng mga de-kalidad na produkto mula sa aming pabrika dito.
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