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Veleprodajne cevi iz nerjavečega jekla – kakovostna zaloga iz zanesljive kitajske tovarne neposredno

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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Varjene cevi iz nerjavečega jekla 2507

Varjene cevi iz nerjavečega jekla 2507

Proizvajalci varjenih cevi iz nerjavečega jekla 2507 imajo veliko zalog, z zunanjimi premeri od 16 do 219 mm, debelino stene od 0,8 do 6 mm in standardno dolžino 6 metrov. Velikosti in dolžine po meri so na voljo na zahtevo. Podprti so postopki poliranja in ščetkanja. Te cevi se pogosto uporabljajo pri razžveplanju dimnih plinov, inženiringu morske vode in cevovodih za močno korozivne kemikalije.
Varjene cevi iz nerjavečega jekla 2205

Varjene cevi iz nerjavečega jekla 2205

Varjene cevi iz nerjavečega jekla 2205 so na voljo v zunanjih premerih 10-3000 mm, debelinah stene 0,5-30 mm in standardnih dolžinah 6 m/12 m. Postopki varjenja so predvsem TIG/MIG, s površinskim luženjem in pasivacijo. Metode povezovanja vključujejo varjenje in prirobnice. Na voljo je obdelava po meri s kratkimi in zanesljivimi dobavnimi roki.
Varjene cevi iz nerjavečega jekla 254

Varjene cevi iz nerjavečega jekla 254

Varjena cev iz nerjavečega jekla 254, splošno znana kot varjena cev 254SMO, je vrsta varjene cevi iz super avstenitnega nerjavečega jekla, ki ustreza številki UNS S31254 in nemški razred 1.4547. Spada v serijo 6-molibdenovih super nerjavnih jekel in je dobil ime po približno 6 % vsebnosti molibdena. To ni dupleksno jeklo, ampak visoko legirano avstenitno nerjavno jeklo, ki ima izjemno visoko odpornost proti luknjičasti koroziji, špranjski koroziji in razpokanju zaradi napetostne korozije.
Varjene cevi iz nerjavečega jekla 309S

Varjene cevi iz nerjavečega jekla 309S

Varjene cevi iz nerjavečega jekla 309S imajo visoko vsebnost kroma in niklja, odlično odpornost na visoke temperature in lahko vzdržijo temperature do 1000 ℃ za daljša obdobja. Prav tako kaže močno odpornost na visokotemperaturno oksidacijo in toplotno utrujenost. Ker združuje dobro odpornost proti koroziji in varivost, ni nagnjen k deformacijam in razpokam v okoljih z visoko temperaturo. Vodilni kitajski proizvajalci varjenih cevi iz nerjavečega jekla priporočajo 309S kot primerno izbiro za srednje- in visokotemperaturne industrijske cevovode, kot so visokotemperaturne dimne cevi, industrijske peči in oprema za toplotno obdelavo.
Varjene cevi iz nerjavečega jekla 321

Varjene cevi iz nerjavečega jekla 321

Varjena cev iz nerjavečega jekla 321 vključuje titan, ki učinkovito zavira interkristalno korozijo, zaradi česar je manj nagnjena k rjavenju in razpokam po varjenju ter kaže odlično toplotno stabilnost. Ima dobro odpornost na visoke temperature, ni zlahka deformiran v izmeničnih vročih in hladnih pogojih, ima dobro plastičnost za enostavno obdelavo in oblikovanje ter močno odpornost proti utrujenosti. Kitajski proizvajalci varjenih cevi iz nerjavečega jekla priporočajo material 321 kot primerno izbiro za cevi za kotle, toplotno opremo in cevovode za izmenjavo toplote pri visokih temperaturah.
Varjene cevi iz nerjavečega jekla 310S

Varjene cevi iz nerjavečega jekla 310S

Glavna prednost varjene cevi iz nerjavečega jekla 310S je njena odpornost na visoke temperature, ki lahko neprekinjeno prenese 1150 ℃ in kratkoročno vzdrži 1200 ℃. Vodilna tovarna inovacij na Kitajskem ima običajno na zalogi naslednje specifikacije: zunanji premer 16–219 mm, debelina stene 0,8–5,0 mm, standardna dolžina 6 metrov in podpira naročila po meri.
Lingchuang je profesionalni Cev iz nerjavečega jekla proizvajalec in dobavitelj na Kitajskem. Dobrodošli pri uvozu kakovostnih izdelkov iz naše tovarne.
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