Welded Stainless Steel Tubes for Pressure Purposes According to En10217-7 X5crni18-10 X2crni18-9

• Customization: Available
• After-sales Service: Oversea After-Sales Service
• Warranty: 1 Years
• Model NO.: ASTMA213/312/790/358/249/269
• Type: Welded
• Technique: Cold Rolled
• Material: Stainless Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Standard Specifications: ASTM A213/A312/A790
• Steel Grades: 304/304h/304L/304ln, 316/316L, 347/347H/347hfg
• Unit Leagth: 5800mm-12000mm
• Od: 2-500mm
• Wt: 2-30mm
• Ends: Plain Ends
• Products: Factory Direct Sales SUS630 Seamless Welded Tube S
• Delivery: 7-35 Days
• Package: Packed by Bundles, Plastic Bags, Wooden Case
• Surface: Pickled, Bright Annealed, Polished
• Application1: Pipeline Transport, Boiler Pipe, Hydraulic/Automob
• Application2: Petroleum, Papermaking, Energy, Sewage Eng
• Application3: Marine, Construction, Offshore Project
• Application4: Electronics, Industrial, Food, Heat Exchanger
• Application5: Food & Beverage, Seawater Cooling Systems
• Transport Package: Seaworthy Package
• Specification: 0.8mm-25mm
• Trademark: EZ Steel
• Origin: China
• HS Code: 73043110
• Production Capacity: 500000/Year

Product Description

Welded Stainless Steel Tubes for Pressure Purposes according to EN10217-7 X5CrNi18-10 X2CrNi18-9

Item	Welded Stainless Steel Pipe
Steel Grade	200 series: 201/ 202/ 204
	300 series: 301/ 302/ 303/ 304/ 304L/ 309/ 309S/ 310/ 310S/ 316/ 316L/ 316Ti/ 317L/ 321/ 347/ 347H
	400 Series: 410/ 420/ 430/ 430F/ 430FR/ 440C/ 444/ 446
	600 Series: 630/ 631
	900 series: 904L
Standard	ASTM, AISI, ASME,JIS, DIN, EN,GB,BS
Surface	Polishing, Annealing, Pickling, Bright, Hairline, Mirror, Matte
Technique	Cold rolled/ Hot rolled
Size	Outer Diameter	3-200mm,or customized
	Wall Thickness	0.2-10mm,or customized
	Length	1-12m,or customized
Package	Standard export package
Trade terms	Price Terms	FOB, CIF, CFR, Ex-work
	Payment Terms	T/T, L/C, Western union
Delivery time	7-15days
Application	Kitchenware, home appliances, construction decoration, stairs, refrigerated container, burner parts, exhaust parts of auto

 

Detailed Photos

EN 10217-7 Stainless Steel Pipes - Technical Specification

1. Introduction

EN 10217-7 is a European standard for welded stainless steel pressure pipes, specifically designed for high-temperature and corrosive environments. These pipes are commonly used in boilers, heat exchangers, and industrial piping systems where pressure resistance, weldability, and corrosion resistance are critical.

 

2. Key Features

Material Grades (Common Options)

Grade	UNS No.	Key Composition	Key Properties
1.4301	S30400	18% Cr, 8% Ni	Standard austenitic, good corrosion resistance
1.4401	S31600	16% Cr, 10% Ni, 2% Mo	Enhanced pitting resistance (marine/chemical)
1.4541	S32100	17% Cr, 9% Ni, Ti-stabilized	High-temperature stability (up to 800°C)
1.4571	S316Ti	16% Cr, 11% Ni, Mo + Ti	Improved creep resistance

Manufacturing & Testing

• Welding Method: TIG (Tungsten Inert Gas) or Plasma welding for precision

• Heat Treatment: Solution annealed for optimal corrosion resistance

• Non-Destructive Testing (NDT): Eddy current, ultrasonic, or hydrostatic testing

• Dimensional Tolerances: Complies with EN ISO 1127 (strict OD/wall thickness control)

Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
1.4301 (304)	520-720	≥210	≥35
1.4401 (316)	520-720	≥210	≥35
1.4541 (321)	520-720	≥210	≥35

 

3. Advantages Over Other Standards

 European Compliance: Meets PED 2014/68/EU (Pressure Equipment Directive) for safety-critical applications.
 Superior Weld Quality: EN 10217-7 mandates strict weld integrity checks (vs. generic ASTM A312).
 Corrosion Resistance: Optimized for European industrial environments (chemical, marine, high humidity).
 Custom Sizes: Available in OD 10.2mm - 1219mm, with wall thicknesses from 0.8mm to 50mm.

 

4. Common Applications

• Power Plants: High-pressure steam lines, condenser tubes

• Oil & Gas: Corrosion-resistant pipelines, refinery heat exchangers

• Chemical Processing: Acid/alkali transport pipes, reactor coils

• Food & Beverage: Hygienic tubing (electropolished options available)

• Shipbuilding: Seawater cooling systems (316/316L preferred)

 

5. Comparison with Similar Standards

Parameter	EN 10217-7	ASTM A312	DIN 17456
Scope	Welded pressure pipes	Welded/seamless pipes	Seamless pipes
Testing	Mandatory NDT	Optional NDT	Hydrostatic required
Common Grades	1.4301, 1.4401	304, 316	1.4306, 1.4404
Market Focus	EU pressure systems	Global general use	German engineering

 

6. Why Choose EN 10217-7 Pipes?

 Guaranteed Performance: Strict EN standards ensure reliability in critical applications.
 Traceability: Full material certificates (3.1/3.2) with heat number and test reports.
 Ready for EU Projects: Comply with CE Marking and PED requirements.

Sample Product Code:
EN 10217-7 1.4404 (316L) | 50mm OD x 2mm WT x 6m | PED Certified | Electropolished

 

7. Ordering Information

• Standards: EN 10217-7, EN 10216-5 (seamless alternative)

• Delivery: Bare/plastic capped, wooden crates for export

• Lead Time: 4-6 weeks (custom sizes), stock available for standard dimensions

Request a quote with:

• Required grade (e.g., 1.4301, 1.4404)

• Dimensions (OD × WT × Length)

• Surface finish (pickled, polished, etc.)

• Certification needs (PED, NACE, etc.)

 

 

 

FAQ

Q:  How many days can you deliver after confirmed the order?
A:  For stock:  within 5-7 days;
      For customized product:  around 30 days;
      For special sizes:  subject to negotiation.

Q: How does your company do quality control?
A: ISO 9001:2015 certified;
     Product certificate as per EN10204 3.1 or 3.2 as per customer's request.
    
  
Q: Can I have a factory-visit?
A:  Surely. All customers are welcome to visit us in China.

Q: Can I have a trial order?
A: Of course, it is an honor for us to have the opportunity to show our quality and service. 
 

Company Profile

	Business Type:	Manufacturer/Factory
	Main Products:	Carbon Steel Pipe , Stainless Steel Pipe , Copper Nickel Tube , Heat Exchanger Tube , Boiler ...
	Registered Capital:	2000000 RMB
	Plant Area:	>2000 square meters
	Management System Certification:	ISO 9001, ISO 14001, OHSAS/ OHSMS 18001, ANSI/ESD
	Average Lead Time:	Peak Season Lead Time: 1-3 months Off Season Lead Time: within 15 workdays

SGS Serial NO. :

QIP-ASI199413Report Verification

EZ STEEL INDUSTRIAL Co., Ltd, together with LONG-RUN METALS Co., Ltd, is the export division and window company of EZ STEEL GROUP, which was founded in 1996 and has been committed to the development and manufacturing of industrial tubes in the past 20 years. It is one of the largest steel tube manufacturing enterprise groups in China. The group possess fixed assets over 200million and more than 800 employees with annual production capacity over 300 thousand tons.

The company has continuously introduced the world advanced manufacturing equipment and now is able to produce welded and seamless steel tube, copper tube and nickle alloy tube. We also have our own coating facilities and workshops for further processing. After years of development, EZ STEEL GROUP and the affiliated enterprises have obtained many kinds of domestic and international certifications including ISO 9001 Quality Management System Certification, ISO14000 Environment Management System Certification, CE, License for Manufacture of Pressure Piping in China, etc. The company has obtained good domestic achievements and is the nominated supplier of CNPC and CNOOC. The product are exported to Southeast Asia, the Middle East and Africa, Europe, Australia, North and Latin Americas via trade companies, and are widely used in pipeline works, foundation works, steel structure works, boiler and condenser fabrication, oil refinery plant, power plant, sugar-making plant, ship-building and offshore construction projects etc.

Holding the concept of First-class Brand, First-class Service, First-class Value, EZ STEEL GROUP is aiming to build up a win-win enterprise platform for both our customers and employees.

CONTACT US
Contact: Rosy Xu
EZ STEEL INDUSTRIAL CO., LTD
Add: No.199, Xiangfu Road, Yuhua Industrial Zone, Changsha City , P.R China 

Pls. do not hesitate to contact me if you have any questions!

You are warm welcomed to visit our factory!!!

Thank you for visiting our products & Looking forward to hearing from you!