GB/T 21833 Austenitic-Ferritic (Duplex) Grade Stainless Steel Seamless Tubes and Pipes

• Customization: Available
• After-sales Service: 24h Onilne Service
• Type: Seamless
• Model NO.: GB/T 21833
• Technique: Cold Drawn
• 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: AISI ASTM DIN JIS GB
• Grade: X2crnimosi18-5-3, 1.442,304 304/304L 304h 321 321H
• Skill: Cold-Drawn
• Od: 6~630mm
• Wt: 1~50mm
• Max Length: 30m
• Surface: Pickled, Bright Annealed, Polished
• Package: Packed by Bundle, Plastic Bag, Wooden Cases etc.
• Transport: Sea-Worthy Packing
• Application1: Oil Transport,Power Station,Chemical Industry
• Application2: Gas Transport,Dewatering System,Fluid System
• Application3: Medical Industry,Boiler,Heat Exchanger
• Application4: Dewatering Transport,Marine Construction
• Application5: Power Generation,Civil Construction
• Delivery: 7-35 Days
• Transport Package: Sea Whorthy
• Specification: Seamless 1/2" To 24" Welded To 72"(DN8~DN1000)
• Trademark: EZS
• Origin: China

Product Description

Product Description

GB/T 21833 Austenitic-Ferritic (Duplex) Grade Stainless Steel Seamless Tubes and Pipes

Product Parameters

Model NO.	Seamless Stainless Steel Pipe
Section shape	Round
Length	Customized by Client and Typically 6000mm
Material Grade	304 304/304L 304h 321 321H 316 316L 316/31L 316h
Specification	OD 6~630MM; WT 1.00~50mm
Origin	China
Production Capacity	1000 Tons/Month
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Construction & Decoration,Boiler Tube,Heat Exchanger,Nuclear Power Plant,Power Station,Medical Industry Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Special Purpose
Standard	AISI, ASTM, DIN, JIS, GB
Steel Grade	Nickel Alloy Pipe
Transport Package	Sea-Worthy Packing
Trademark	EZS
Our services:	We can customized  according  to customer's requriement or drawing ,packaging according  to customers' request

Chemistry Composition

C, %	Si, %	Mn, %	P, %	S, %	Cr, %	Ni, %	Mo	N, %
0.03 max	1.4-2.0	1.2-2.0	0.03 max	0.03 max	18.0-19.0	4.5-5.2	2.5-3.0	0.05-0.10

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %	Hardness, HB
630 min	440 min	30 min	290 max

Outside Diameter & Tolerance

Hot rolled	Outside Diameter, mm	Tolerance, mm
	OD≤101.6	+0.4/-0.8
	101.6	+0.4/-1.2
	190.5	+0.4/-1.6
Cold Drawn	Outside Diameter, mm	Tolerance, mm
	OD<25.4	±0.10
	25.4≤OD≤38.1	±0.15
	38.1	±0.20
	50.8≤OD<63.5	±0.25
	63.5≤OD<76.2	±0.30
	76.2≤OD≤101.6	±0.38
	101.6	+0.38/-0.64
	190.5	+0.38/-1.14

Wall thickness & Tolerance

Hot rolled	Outside Diameter, mm	Tolerance, %
	OD≤101.6, WT≤2.4	+40/-0
	OD≤101.6, 2.4	+35/-0
	OD≤101.6, 3.8	+33/-0
	OD≤101.6, WT>4.6	+28/-0
	OD>101.6, 2.4	+35/-0
	OD>101.6, 3.8	+33/-0
	OD>101.6, WT>4.6	+28/-0
Cold Drawn	Outside Diameter, mm	Tolerance, %
	OD≤38.1	+20/-0
	OD>38.1	+22/-0

About EZ STEEL Group

 

Detailed Photos


Workshop Equipment

Production Process


Detecting Department
Packaging & Delivery


Global Business Main Customers


Certificates

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.66,  Zhongyi 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!