Stainless welded tube and pipe
ASTM A269/A270/A554
Raw material： Tsingshan/Indonesia

Products Specification
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For heat exchanger
For sanitary
For ornamental
For manual welding
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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

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.

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Basic Specification of stainless steel welded tube&pipe

Product Name	Executive Standard	Dimension	Steel 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 Tubing	ASTM A249, A269, JIS G3463	OD: 15.9~139.8mm WT: 1.6~5.0mm	TP304, TP304L, TP316L, SUS304TB
Mechanical and Structural Tubes	ASTM A554, JIS G3446	OD: 7.9~152.4mm WT: 0.5~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD SUS304
Square Tubes	ASTM A554	OD: 12.7×12.7~150x150mm WT: 0.7~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Rectangular Tubes	ASTM A554	OD: 10×20~100x200mm WT: 0.7~6.5mm	MT304, MT304L, MT316L, MT430 Grade 201, 202 as per mill’s STD
Sanitary Tubing	ASTM A270 JIS G3447	OD: 25.4~165.2mm WT: 0.8~3.05mm	TP304, TP304L, TP316L, SUS304TBS
Large Gauge Pipes for Ordinary Piping	JIS G3448	OD: 15.88~318.5mm WT: 0.8~3.0mm	SUS304TPD
Large Diameter Pipes	JIS G3468	OD: 14″~40″ WT: SCH5S~SCH40S	SUS304TPY

Stainless Steel Heat Exchanger Pipe (ASTM A249/A269 EN10217-7)

Heat Exchanger stainless pipe

Key Points：

Crystal Structure

All of our heat exchanger pipes will follow the ASTM A269 standard， annealing 1050 ℃ will get the most even structure. Great improvement of plasticity before bending will be available.

Customizable Sizes

OD: 12mm-159mm

W.T: 0.6mm-3.05mm

Customized Length: 6m, 20 feet, or as required

Professional Tests

Inspections include the testing of water pressure, eddy current, flare test, and intergranular corrosion test will be applied.

Heat Exchanger stainless pipe Application

Stainless steel Sanitary tube

Outside Diameter: 24mm-159mm
Thickness: 0.6mm-3.05mm
Length: 6m, 20 feet or as required
Finish: 180/240/320Grit (Rɑ 0.5-0.8µm)

Precise polishing

We expertised in surface polishing craftsmanship. Stainless steel pipe surface grit ranges from 180G to 320G (Rɑ 0.8µm and Rɑ 0.5µm) standard. Customized polishing is availble.

Hot rolled/cold rolled

most of stainless steel pipe are made from hot rolled strip, however, we can supply cold rolled pipe strips, and the chemical and mechanical property are more stable, and ensure easy welding.

Stable structure

Annealing temperature controlled to 1,038°C, which can make the pipe more ductile and easily get bended without crack.

Stainless Steel Ornamental and Construction Pipe (ASTM A554 EN10296-2)

Stainless A554 pipe is widely used in decoration and construction. It is supposed to be the most widely used pipe in our daily life. For the surface polishing, Based on grit， there are 180#，320#，380#， based on surface shining， there are matte polished and mirror shining polished. Based on mode type, there are round/square/rectangular/customized modes. Customized shap also available.

ASTM A554 Round Tube

OD: 6mm-219mm
W.T: 0.6mm-5mm
Length: 6 meters or as requested
Finish: MF/ Brushed /180/320/400/600 grit

ASTM A554 Square Tube

Side: 6mm-219mm
W.T: 0.6mm-5mm
Length: 6 meters or as requested
Finish: MF/ Brushed /180/320/400/600 grit

ASTM A554 Square Tube

Side: 10×20-150X200mm
W.T: 0.6mm-5mm
Length: 6 meters or as requested
Finish: MF/ Brushed /180/320/400/600 grit

ASTM A554 Square Tube

Outside Diameter: as requested

Thickness: 0.8mm-2mm

Length: 6 meters or as requested

Finish: 180/600 grit

Stainless Steel Ornamental and Construction Pipe (ASTM A554 EN10296-2) Application

Furniture/Elevator/handrail/windows

Manually Welded Pipes

MANUAL WELDING：OD 219.08MM-2500.00MM/WT3.00MM-35.00MM (SCH5S-80S,SCH5-160,STD)

Advantage of our Manual welding pipe

Better Raw Material

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.