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Home » stainless_products » ALLOY 718, UNS N07718 Stainless steel tube
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Untitled-2
ALLOY 718, UNS N07718 Stainless steel tube

Outer Diameter:1/8”-1 3/4” (3.17mm-44.5mm)

Thickness:0.3-150mm

Surface:BA,2B,NO.4,HL,8K

Standard:ASTM,AISI,JIS,GB,DIN,EN

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Alloy 718 is a kind of age hardening austenitic material. The strength depends largely on the initial phase precipitated during heat treatment.

Good machinability under annealing condition;

Good tensile, fatigue and creep fracture strength; Up to 700 ℃;

High temperature strength up to 700℃;

Good oxidation resistance, up to 1000℃;

Excellent mechanical properties at low temperature;

Good arc weldability, not easy to produce post welding crack.

718 alloy has excellent corrosion resistance to a variety of media. This resistance is similar to the resistance of other nickel-chromium alloys and is a function of their composition. Nickel contributes to the corrosion resistance of many inorganic and organic compounds, in addition to strongly oxidized compounds, over a wide range of acidity and alkalinity. It is also suitable for resisting chloride stress corrosion cracking. Chromium has the ability to resist oxidizing media and sulfur compounds attack. Molybdenum is known to help resist pitting in many media.

Product NameExecutive StandardDimensionSteel Code / Steel Grade
Industrial Pipes

ASTM A312, A358, A778

JIS G3459


OD: 1/4″~40″

WT: SCH5S~SCH80S
TP304, TP304L, TP316L, SUS304TP
Tubes for Boiler and Heat-Exchanger, General Service TubingASTM A249, A269, JIS G3463OD: 15.9~139.8mm

WT: 1.6~5.0mm
TP304, TP304L, TP316L, SUS304TB
Mechanical and Structural TubesASTM A554, JIS G3446OD: 7.9~152.4mm

WT: 0.5~6.5mm
MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD SUS304
Square TubesASTM A554OD: 12.7×12.7~150x150mm

WT: 0.7~6.5mm
MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Rectangular TubesASTM A554OD: 10×20~100x200mm

WT: 0.7~6.5mm
MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Sanitary TubingASTM A270

JIS G3447
OD: 25.4~165.2mm

WT: 0.8~3.05mm
TP304, TP304L, TP316L, SUS304TBS
Large Gauge Pipes for Ordinary PipingJIS G3448OD: 15.88~318.5mm

WT: 0.8~3.0mm
SUS304TPD
Large Diameter PipesJIS G3468OD: 14″~40″

WT: SCH5S~SCH40S
SUS304TPY

Better Raw Material

Qukin steel 018_

Most of material are from first class mills like Baosteel, Posco, Tsingshan. From slitting to material test, we provide the best chemical and mechanical guarantee.

Better Raw Material

Qukin steel 0031

With our experienced masters, manual welding pipes will be straightened by our machinery. TIR guaranteed. 

Delicate Package
Qukin steel 021_

For Europe and American clients, we are experienced to provide fumigated wooden box to guarantee each and every pipe will be safely delivered. 

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japan pattern 2

Checker Plate

Japan/Belgium/Pressed checker

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9c454559e707ff7c7488d6c2ace6da85

Brushed Sheet

No.4/HL/Snow brushed/8K

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