SS304 SS316 SS304L SS316L STAINLESS STEEL WELDED PIPES

Welded stainless steel pipe is made by joining together pieces of metal using a welding process.
Welded pipes have seams that can be seen and felt, and they are not as strong as seamless pipes.
Welded pipes are less expensive than seamless pipes, but they are not as high quality.
Butt produces longitudinally welded pipes with wall thicknesses of up to 70 mm and an outside diameter of
up to 2 032 mm (80") from individual steel plates – in standard dimensions from stock, as well as individually
for your pipeline projects.

Deye Piping Industry supply SS welded pipes with lengths of up to 12 m without circumferential weld, and up to 24 m
with circumferential weld. This procedure is used for example if you order project-specific quantities in special
sizes, special materials or in clad materials.You can coordinate all the technical product features of
the pipes for your project with us, for example:
• Size
• Tolerances
• Material
• Testing requirements
• Mechanical-technological characteristics

This is how we optimise our BUTTING welded pipes to meet your needs

Product Information/Product Description/Basis Information/Specification

Features /Characteristics

• Corrosion resistant pipes with outside diameters from 15 to 2 032 mm (80") and
wall thicknesses up to 70 mm
• Pipes made from special alloys, titanium or clad materials
• Pipes with demanding tolerance requirements
• Pipes with special geometric shapes
• Pipes according to internationally valid standards
• Pipes with customer-specific requirements, e. g. for BASF, Shell, Saudi Aramco
• Standard pipes supplied at short notice from our varied range of stock

Technology/ Technical Data Sheets

Welded stainless steel with single Longitudinal Welded seam and double Weld seam

Size range from 1/2” to 48” DN15-DN1200.

The reference Standard for the stainless pipes

ASTM A312/A312M, ASME SA312/SA312M for Seamless Austenitic Stainless-Steel Pipes:

ASTM A269, ASME SA269 for Seamless Austenitic Stainless-Steel Tubing for General Service

ASTM A213/A213M, ASME SA213/SA213M for Seamless Austenitic Alloy-Steel Boiler, Super Heater and Heat-Exchanger Tubes

ASTM A789 / A789M. Seamless Duplex Stainless Steel Tubing for General Service.

ASTM A790 / A790M for Seamless Duplex Stainless Steel Pipes

ASTM A511 for Seamless Stainless Steel Mechanical Tubing

EN 10216, DIN 17456, 17458 for Seamless Stainless-Steel Tubes for Pressure Purposes

Material Grades:

Stainless steel is the abbreviation for stainless and acid resistant steel. Steel that is resistant to weak corrosive media such as air, steam, water, or has rust resistance is called stainless steel; And the steel grade that is resistant to chemical corrosion media (such as acid, alkali, salt, etc.) corrosion is called acid resistant steel.

The most common used material is SS304/304L, SS316/316L, DUPLEX SAF2507, SAF2205, Detail’s specification of the material as below.

Tensile Strength: ≥ 485 Mpa (70KSI)

Yield Strength: ≥170Mpa (25KSPI)

Elongation ≥ 40%

Tensile Strength: ≥ 485 Mpa (70KSI)

Yield Strength: ≥170Mpa (25KSPI)

Elongation ≥ 40%

SAF2205 (UNS31803)

Chemical Composition%

Mechanical Performance

SAF2507(UNS32750)

Chemical Composition%

Mechanical Performance

Production Process

Application/Usage

Stainless steel pipe and tubing are used in chemical plants, aviation fields, marine equipment, cryogenic transportation, medical and architectural industries.

- Chemical plants

- Aviation fields

- Marine equipment

- Cryogenic transportation

- Medical & architectural industries

FAQ/ Customer Question and Answers

Q: What is difference between tubes and pipes?

A: Tubes and pipes are difficult to identify occasionally and some people use the name of tube and pipe interchangeably. However, there are significant differences between tubes and pipes. Tubes are measured in outer diameter and wall thickness. The tube is produced with close tolerance range and requires precise outer diameter and wall thickness to identify its working pressure.

Q: What is Difference Between Stainless Steel Pipes Seamless and Welded?

A: 1) Strength: The main difference between seamless and welded pipes is in their strength. Seamless pipes are stronger because they do not have any welded seams. Welded pipes are weaker because the welds can act as weak points that could break under high pressure.

2)Cost: Seamless stainless-steel pipes are more expensive than welded ones because they require more time and effort. Welded pipes are less expensive because they can be made quickly and with less precision.

3) Applications: Seamless stainless-steel pipes are typically used in high-pressure applications, such as hydraulic systems, while welded pipes are used in low-pressure applications, such as water piping.

Our Service

1. Technical support

2. Raw Material Quality control.

3. Inspection during the production time.

4. Final Test includes Surface, Dimension, PT Test, RT test, ultrasonic Test

5. Test Report each shipment

4. Flexible Delivery terms. EXW FOB CIF CFR DDP DDU

5. Flexible payment Ways: LC. TT. DP

6. Customized Package includes Logo. Cases Dimension.

7. 18 months quality Guarantee time.

9. Free replacement by air if any error founded

10. 24 hours to Feedback your questions