ASTM A312 304L 1.4307 SUS304L Sch80 ERW Welded Steel Tube for Industrial Exhaust Systems

• Customization: Available
• After-sales Service: Offer Solutions Such as Replacements, Refunds, or
• Type: Welded
• Model NO.: 304L 1.4307 SUS304L
• Technique: ERW
• Material: Stainless Steel
• Surface Treatment: Annealed and Pickled / Bright Annealed / Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Construction & Decoration, Special Purpose, Petrochemical Pipeline Systems
• Section Shape: Round
• Density: 7.93
• Certificate: En 10204 3.1 Mill Test Certificate
• End: Plain Ends / Beveled Ends / Threaded
• Tolerance: Od ±0.05mm, Wt ±0.05mm
• Welding Method: ERW (High Frequency) / Longitudinal Welding
• Application: Oil and Gas / Chemical Processing / Heat Exchanger
• Carbon: Low Carbon
• Transport Package: Waterproof Paper or Wooden Box
• Specification: 6mm-352mm
• Trademark: YTJM
• Origin: China
• HS Code: 7304419000
• Production Capacity: 5000ton/Year

Product Description

Product Description

304L Welded Stainless Steel Pipe

304L welded stainless steel pipe is manufactured from high quality 304L low carbon austenitic stainless steel coil through high frequency ERW (Electric Resistance Welding) longitudinal welding process. The low carbon content provides excellent weldability and eliminates intergranular corrosion after welding, making it an ideal cost effective solution for a wide range of industrial applications.

Our Advantages

Direct Manufacturer – ISO CE PED certified factory with extensive experience in stainless steel welded pipe production.

Strict Quality Control – 100% weld seam ultrasonic testing, hydrostatic testing, chemical analysis and dimensional inspection on every batch.

Full Traceability – EN 10204 3.1 Mill Test Certificate with complete test records and material traceability.

Wide Size Range – Extensive size inventory with custom OD, wall thickness and length supported.

Competitive Pricing – Factory direct supply with cost effective ERW welded construction.

Fast Delivery – Large stock available for quick shipment with custom orders delivered promptly

Specification

Shape	Round, Square, Rectangle
Technique	ERW (High Frequency) / Longitudinal Welding
Production Standards	ASTM A270, ASTM A269,ASTM A249, ASTM A778, ASTM A789, DIN 11850, EN 10357, EN 10217-7 and so on.
Outer Diameter	6mm – 1016mm (1/8″ – 40″)
Thickness	0.5mm – 50mm (SCH5 – SCHXXS);
Length	As per customers' request ;
Tolerance	According to the Standard, +/-10% Commonly ;
Delivery Condition	Annealed / Cold Rolled / As Welded
Application	Low to medium pressure oil and gas pipeline systems Chemical and petrochemical processing equipment Food and beverage processing lines Pharmaceutical and biotech facilities Water treatment and desalination plants HVAC, chilled water and fire protection piping Architectural structures and decorative trim Heat exchangers and condensers Automotive exhaust components General engineering and construction projects
Test	Flaring test;Flattening test;Bending Test; Hydraulic Test;Eddy Current test
Certificate	ISO9001; ISO14001; PED; CE
Packaging	1. cases packed in wooden cases 2. paper packaging 3. plastic packing 4. foam packaging According to customer requirements or products
Material	300 Series:304/304L/309S/310S/316/316 L/321/347
	600 Series: 610/620/630
	Others: Duplex Steel 2205 2507 31803;
	Special Alloy:Incoloy800; Incoloy600; C-276; Monel400; Incoloy925;
	900 Series:904L

Packing & Delivery

Packing

Loading into container

• 1.Waterproof paper wrapping – keeps tubes rust-free during transit
• 2 lifting belts per tube – ensures easy unloading at your port

• 3.Wooden box;

One packing size:6010mm*500*400mm

• Load tubes into containers using overhead cranes
• Secure with steel wire ropes
• Reserve side clearance when needed

Quality Control

YTJM stainless steel seamless pipes undergo rigorous quality control at every stage:

QC Stage	Inspection Details
Raw Material Inspection	Spectrochemical analysis verifies chemical composition of all incoming steel rounds; material certificates reviewed
In-Process Inspection	Real-time monitoring of temperature, pressure, and dimensions during hot rolling/cold drawing
Heat Treatment Control	Precise control of solution annealing parameters to optimize microstructure and corrosion resistance
Mechanical Testing	Tensile strength, yield strength, elongation, and hardness testing per ASTM A370
Non-Destructive Testing	100% ultrasonic testing or eddy current testing for internal defects
Dimensional Inspection	OD, wall thickness, straightness, and length verified with calibrated instruments
Hydrostatic Testing	Pressure testing to verify integrity per applicable standards
Final Visual Inspection	Surface quality check for scratches, pits, or other defects
Documentation	Mill test certificates and inspection reports provided with each shipment

Certifications

Company Profile

Factory

Equipment

Visit

Jiangsu Yintuo Steel Tube Co., Ltd. is a professional manufacturer integrating R&D, production, and sales of stainless steel seamless and precision tubes. 

Key Facts:

Annual Capacity: 25,000+ tons
Size Range: OD 6–325mm · WT 1–50mm
Certifications: ISO 9001/14001 · CE · PED
Equipment: 15 rolling mills 

Heat treatment · Hydrostatic & Eddy current test
Stock: 5,000 tons ready for fast delivery

Yintuo factory is equipped with

15 precision rolling mills,

4 degreasing tanks,

1 automated bright annealing furnace,

2 straighteners, 

plus hydrostatic and eddy current testers. From piercing to finishing,

all processes are completed in-house – ensuring every tube meets precise specs and consistent quality.

We regularly welcome customers from the Middle East, South America, Southeast Asia, and beyond to visit our factory.

From raw material yards to rolling lines, from heat treatment furnaces to testing labs – clients can witness every step of how a stainless steel tube is made.

These visits build trust and help us better understand their project needs.

Yintuo is always open to partners from around the world.

Not sure which tube fits your project?

Send us your specs – we'll recommend the right material, size, and finish. Free technical support, no obligation.