seamless boiler tubes description
Seamless boiler tubes is a kind of boiler tube, which belongs to the seamless steel tube category. The manufacturing method is the same as the seamless pipe, but there are strict requirements on the steel type used for manufacturing the steel pipe. Seamless steel tubes are often under high temperature and pressure when used. The tubes will be oxidized and corroded under the action of high temperature flue gas and water vapor. It is required that the steel pipe has high durability, high resistance to oxidation and corrosion, and good structural stability. High-pressure boiler seamless tubes are mainly used to manufacture superheater tubes, reheater tubes, air ducts, and main steam tubes for high-pressure and ultra-high-pressure boilers.
Seamless boiler tubes chemical composition
Boiler tube standard | Grade | Chemical composition of seamless boiler tubes | |||||||||
C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V> | ||
ASTM A192ASME SA192 | A192 | 0.06-0.18 | ≤0.25 | 0.27-0.63 | ≤0.035 | ≤0.035 | / | / | / | / | / |
Seamless boiler tubes mechanical property
strength of extension(MPa) | yield strength(MPa) | elongation( % ) | hardness |
≥325 | ≥180 | ≥35 | ≤77HRB |
Seamless boiler tubes specification
Products name | Seamless boiler pipe |
Standard | API 5L, ASME, ASTM B36, JIS, DIN, GB8162, GB8163, GB5310,etc. |
Material | ASTM A106 GRB/ A53 GRB/ API 5L X42,X52,X60,X65,X70GRB/ |
Length | 12m,11.8m,6m,5.8m,or as customers required |
Surface treatment | Black painting, black varnish, transparent oil, hot galvanized, |
Application | Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe, Other |
Section Shape | Round |
Surface Treatment | Hot Rolled |
Tolerance | ±1% |
Alloy Or Not: | Non-Alloy |
Outer Diameter: | 6mm-720mm |
Thickness: | 0.25-200mm |
MOQ: | 5Tons |
Payment | 30%TT+70%Banlance |
Packing: | Standard Sea-worthy Packing |
Production method of boiler seamless tube
Boiler seamless tube is a kind of seamless tube. The manufacturing method is the same as that of seamless pipes, but there are strict requirements on the steel grades used in the manufacture of steel pipes. According to the operating temperature, it can be divided into general boiler tubes and high-pressure boiler tubes.
① Generally, the service temperature of boiler seamless pipe is below 450℃. Domestic pipes are mainly made of No. 10 and No. 20 carbon steel hot-rolled pipes or cold-drawn pipes.
②High-pressure boiler tubes are often in high temperature and high pressure conditions when they are used. The tubes will be oxidized and corroded under the action of high-temperature flue gas and water vapor. The steel pipe is required to have high enduring strength, high oxidation and corrosion resistance, and good organizational stability.
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Application
Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.
Exporting country
We are a well known worldwide supply and export Boiler steel pipe in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.
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