Zhongzheng Stainless Steel Co., Ltd.: 1Yr

Tianjin, China; Main products: Stainless Steel, Valve, Flange, pipe fitting

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Home > Products > Industrial Pipeline Series > High Precision Galvanized Steel Heat Exchanger Tube ASTM B673 Uns N08925 Seamless and Welded Austenitic Stainless Steel

High Precision Galvanized Steel Heat Exchanger Tube ASTM B673 Uns N08925 Seamless and Welded Austenitic Stainless Steel

FOB Price

USD $300 - $500 / Ton

1 Ton(Min.Order)

Supply Ability 0 Ton / Tons per Month
Payment TermsT/T L/C PayPal D/P Western Union Other
Delivery Detail8 days

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Product Details

Type	Stainless Steel Pipes	Certification	ISO, ROHS, IBR, AISI, ASTM, GB, EN, DIN, JIS, Other
Shape	Round	Grade	Other
Technique	Other	Surface Treatment	Polished
Standard	ASTM, AISI, GB, JIS, DIN, EN, Other	Specification	OEM
Trademark	ZHONGZHENG INTERNATIONAL	Origin	China

Product Description

Hastelloy C-276 alloy pipe

Basic Info.

Model NO.

Urea Grade Austenitic Stainless Seamless Pipe

Type

Welded

Technique

Cold Drawn

Material

Alloy Steel

Surface Treatment

Varnishing

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

Square

Product Name

Urea Austenitic Seamless Stainless Steel Pipe

Keywords

Urea Stainless Steel Pipe

Min Thickness

0.5mm

Max Length

25 M

Tube Material

904L/254smo/410/430/316lmod/S31050/

Standard

GB /T 37578 - 2019

Grade

S31792/S31053/S31053

OEM & ODM Custom

Sample

Common Standards 1

ASTM A312(ASME SA312)/ASTM A213(ASME SA213)

Common Standards 2

GB/T 14976/GB 13296/GOST 9941/En 10216-5/JIS G3459

Common Grade 1

304/L/H/Ln, 316/L/H/Ln/Ti/Lmod, 310S/H,317/L,321/H

Common Grade 2

347H/Hfg, N08904(904L), N08367, S31254(254smo)

Application 1

Large Boilers, Heat Exchangers, Condensers

Application 2

Evaporators and Fluid Transport

Trademark

ZHONGZHENG

Transport Package

Standard Packaging or Customized

Specification

Standard Specifications or Customized

Origin

China

Process Classification	Physical polishing (MP)
	Pickling and polishing (AP)
	Bright annealing (BA)
	Electrolyte pickling (EP)

Urea Grade Austenitic Seamless Stainless Steel Pipe

Urea-grade stainless steel is austenitic stainless steel specially developed for high-temperature carbamate solutions (such as urea production). Urea grade stainless steel has strong corrosion resistance in high-temperature carbamate solution. The environment is generated when ammonium carbamate is used as a medium for the reaction of ammonia and carbon dioxide in urea production. It has strong resistance to local corrosion generated in the high-temperature carbamate environment of the high-pressure part of the urea equipment. 2522 stainless steel has little weight loss and local corrosion in the Huey test. 725LN is a fully austenitic structure and has a low content of non-metallic impurities. It is mainly used in the manufacture of urea production equipment.

This type of steel pipe is mainly used in the core components of synthetic ammonia and urea industry. The raw materials are obtained by electro-slag remelting.

In addition to focusing on cleanliness control in the production process, the focus is on the control of heat treatment links. They are all ultra-pure stainless steels, which mainly solve the problem of selective corrosion of ferrite in the ammonia environment during urea synthesis.

Austenitic stainless steel pipe has a stable austenite group at room temperature. The steel contains about 18% Cr, more than 8% Ni, and about 0.1% C. It has high corrosion resistance, good cold processing, and good toughness, plasticity, welding, and non-magnetic properties. It is widely used in heat exchangers, non-magnetic condensers, evaporators, and fluid transportation in chemical, oil refining, boilers, food, and other industries.

Super austenitic stainless steel pipe has higher cleanliness, uniformity, mechanical properties, finer structure, better surface quality, better resistance to local corrosion of harsh media, and better process manufacturing performance than ordinary austenitic stainless steel pipe.

It is a stainless steel developed for urea production based on 316L, with additional restrictions on the minimum content of Cr, Ni, and Mo; the purpose is to obtain a fully austenitic structure of stainless steel after the final heat treatment and to make the ferrite content not exceed 0.6%, and at the same time, requirements are put forward for intergranular corrosion tendency experiments and selective corrosion.

This material is specially used in the urea industry. Therefore, urea and 316l stainless steel are called. Urea and stainless steel need to undergo Hugh test and selective corrosion test.

Detailed Photos

Product Parameters

Caliber Code		OD	SCH
Nominal Diameter DN	Inch	Outer Diameter mm	SCH 5S	SCH 10S	SCH 40S	SCH 80S	SCH 10	SCH 20	SCH 30	STD	SCH 40	SCH 60	XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	XXS
6	1/8	Φ10.29	-	1.24	1.73	2.41	-	-	-	1.73	1.73		2.41	2.41	-	-	-	-	-
8	1/4	Φ13.72	-	1.65	2.24	3.02	-	-	-	2.24	2.24	-	3.02	3.02	-	-	-	-	-
10	3/8	Φ17.14	-	1.65	2.31	3.20	-	-	-	2.31	2.31	-	3.20	3.20	-	-	-	-	-
15	1/2	Φ21.34	1.65	2.11	2.77	3.73	-	-	-	2.77	2.77	-	3.73	3.73	-	-	-	4.78	7.47
20	3/4	Φ26.67	1.65	2.11	2.87	3.91	-	-	-	2.87	2.87	-	3.91	3.91	-	-	-	5.56	7.82
25	1	Φ33.4	1.65	2.77	3.38	4.55	-	-	-	3.38	3.38	-	4.55	4.55	-	-	-	6.35	9.09
32	1.1/4	Φ42.16	1.65	2.77	3.56	4.85	-	-	-	3.56	3.56	-	4.85	4.85	-	-	-	6.35	9.70
40	1.1/2	Φ48.26	1.65	2.77	3.68	5.08	-	-	-	3.68	3.68	-	5.08	5.08	-	-	-	7.14	10.15
50	2	Φ60.32	1.65	2.77	3.91	5.54	-	-	-	3.91	3.91	-	5.54	5.54	-	-	-	8.74	11.07
65	2.1/2	Φ73.02	2.11	3.05	5.16	7.01	-	-	-	5.16	5.16	-	7.01	7.01	-	-	-	9.53	14.02
80	3	Φ88.9	2.11	3.05	5.49	7.62	-	-	-	5.49	5.49	-	7.62	7.62	-	-	-	11.13	15.24
90	3.1/2	Φ101.6	2.11	3.05	5.74	8.08	-	-	-	5.74	5.74	-	8.08	8.08	-	-	-	-	-
100	4	Φ114.3	2.11	3.05	6.02	8.56	-	-	-	6.02	6.02	-	8.56	8.56	-	11.13	-	13.49	17.12
125	5	Φ141.3	2.77	3.40	6.55	9.53	-	-	-	6.55	6.55	-	9.53	9.53	-	12.70	-	15.88	19.05
150	6	Φ168.28	2.77	3.40	7.11	10.97	-	-	-	7.11	7.11	-	10.97	10.97	-	14.27	-	18.26	21.95
200	8	Φ219.08	2.77	3.76	8.18	12.70	-	6.35	7.04	8.18	8.18	10.31	12.70	12.70	15.09	18.26	20.62	23.01	22.23
250	10	Φ273.05	3.40	4.19	9.27	12.70	-	6.35	7.80	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40

Nominal Outer Diameter
D(mm)

Nominal Thickness
S(mm)

0.51

0.71

0.89

1.15

1.24

1.65

2.11

2.41

2.77

3.05

3.18

3.4

3.96

4.78

Φ3.175

Φ6.35

Φ9.53

Φ12.70

Φ14.30

Φ15.88

Φ19.05

Φ25.40

Φ31.75

It is used in industrial environments with harsher working conditions and stronger corrosion resistance, which ordinary austenitic stainless steel cannot meet, such as media environments such as butyl acetate, acetic acid, formic acid, terephthalic acid, polyvinyl chloride in the petrochemical industry; media environments such as sulfuric acid, ferric sulfate, soda ash, phosphoric acid in inorganic chemicals; crude oil desalting and vacuum distillation in crude oil refining; superheaters, reheaters, and final reheaters in supercritical boilers, etc.

Machinable Materials
EN	TP	UNS		STANDARD
1.4301	TP304	S30400		EN 10217/7TC1&TC2
1.4306	TP304L			EN 10296-2
1.4307	TP304L	S30403		EN10357
1.4311	TP304LN	S30453		DIN11850
1.4404	TP316	S31600		AD2000W2-W4-W10
1.4404	TP316L	S31603		ASTM/ASME A/SA249
1.4406	TP316LN	S31653		ASTM A269
1.4432	TP316L			ASTM A270
1.4435	TP316L			ASTM A554
1.4436	TP316			ASTM A632
1.4438	TP317L	S31703		ASTM A778
1.4439	TP317LNM	S31726		ASTM/ASME B/SB674
	TP317	S31700		ASTM/ASME A/SA312
1.4449	TP317			ASTM/ASME A/SA688
1.455	TP347	S34700		ASTM/ASME B/SB676
1.4541	TP321	S32100
1.4571	TP316TI	S31653
1.4828	TP309
1.4833	TP309S	S30908
1.4845	TP310S	S31008
1.4878	TP321H	S32109
1.4948	TP304H	S30409
1.4835	253MA	S30815
	ALLOY840	S33400
Ferritic Steel
EN	TP	UNS		STANDARD
1.4016	TP430	S43000		ASTM/ASME A/SA268
1.4509	TP441			ASTM/ASME A/SA249
1.4512	TP409			EN10357
1.4521	TP444			ASTM A/SA803
	TP439M	S43932		EN 10296-2
1.451	TP439M			ASTM A554
1.452	TP430Ti
	TP439	S43035
	TP410S	S41008
2.4630		GH3030
Duplex Steel
EN	TP	UNS	GRADE	STANDARD
1.4362		S32304	DSS 2304	EN 10217/7 TC1&TC2
1.4162		S32101	DSS 2101	ASTM/ASME/SA789
		S32003	DSS 2003	EN10357
1.441		S32750	DSS 2507	AD 2000 W2
1.4501		S32760		EN 10296-2
		S82031		ASTM A554
1.4462		S31803	DSS 2205	ASTM/ASME A/SA790
1.4462		S32205	DSS 2205
1.4481		S31260
1.4424		S31500
1.4466		S31050
SUPERAUSTENITIC STEEL
EN	TP	UNS	GRADE	STANDARD
1.4529		N08926	1925HMO	EN10296-2
		N08367		ASTM/ASME/SA249
1.4562		N08031	ALLOY 31	ASTM A269
1.4539		N08904	904L	ASTM A270
1.4547		S31254	254SMO	ASTM/ASME A/SA312
				ASTM/ASME B/SB676
				AD 2000 W2
				ASTM A632
				ASTM/ASME B/SB674
				ASTM/ASME A/SA688
				ASTM/ASME B/SB674
				ASTM/ASME A/SA468
NICKEL ALLOYS
EN	TP	UNS	GRADE	STANDARD
2.4602		N06022	ALLOY 22	ASTM/ASME B/SB515
2.4605		N06059	ALLOY 59	ASTM/ASME B/SB516
2.466		N08020	ALLOY 20	ASTM/ASME B/SB626
2.4633		N06025	ALLOY 25	ASTM/ASME B/SB704
1.4563		N08028	ALLOY 28	ASTM B/SB751
1.4876		N08800	ALLOY 800	ASTM/ASME B/SB730
2.4858		N08825	ALLOY 825	ASTM/ASME B/SB468
2.436		N04400	ALLOY 400	AD 2000 W2
2.4816		N06600	ALLOY 600	EN 10217/7 TC1&TC2
2.4851		N06601	ALLOY 601
2.47		N06058	ALLOY 2120
2.4675		N06200	ALLOY C2000
2.4068		N02201	ALLOY 201
2.4733		N06230	ALLOY 230
2.4819		N10276	C-276
2.4856		N06625	ALLOY 625
1.4959		N08811	INCOLOY 800HT
2.4060		N02200	NICKEL 200
2.4600		N10675	Hastelloy B-3
2.4617		N10665	Hastelloy B-2

FAQ

Q1: Are you a trading company or manufacturer?

We are a processing type company specializing in processing stainless steel for 304/304L large diameter thick wall stainless steel welded pipe and other materials. Prompt delivery, low price, high quality, unique insight into various materials of stainless steel, rolled round, straight seam, ring seam.

Q2: What are the company's main products?

304/304L stainless steel welded pipe processing, Thick-walled stainless steel welded pipe processing, Large diameter stainless steel welded pipe processing, Customizable stainless steel shrimp elbow, etc.

Q3:What are the advantages of your company?

We have many professionals, technical personnel, more competitive prices, and better after-sales service than other stainless steel companies.

Q4: What do you do to control product quality?

Before loading into the container, all products will go through a pre-shipment inspection by our professional QC group. UT test is called is applied to steel material, according to Sep 1921 C/c, D/d, or E/e level based on different types of steel.

Q5:What is your MOQ?

Our MOQ for each order is around 25 Tons(one container), customers can mix different types of steel to reach this quantity.

Q6: Can we visit your company and factory?

Yes, warmly welcome! We can book the hotel for you before you come to China and arrange for our driver to our airport to pick you up when you come

Company Profile

Zhongzheng Stainless Steel Co., Ltd.

Zhongzheng Stainless Steel Co., Ltd. is a China-based manufacturer specializing in R&D, production, and distribution of stainless steel products. Established in the early 2000s, it serves industries including construction, machinery, food/medical equipment, and energy with precision tubes, sheets, profiles, and custom components.

Contact Us

Zhongzheng Stainless Steel Co., Ltd.: Contact nameLaijing Bu
Chat Now; AddressRoom 104-07, Building 5, Jinghu Technology Park Huanajinghu Garden, Donglihu Subdistrict Dongli District,

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Product Categories

Galvanized steel pipe	Steel coil sheet and plate	Galvanized Steel Sheet	Industrial Pipeline Series
Industrial sheets and rolls	Industrial Valve Series	Industrial Accessories Series	Sanitary valve series
Hygienic grade piping series	Hygienic grade accessory series	Sanitary grade panels and rolls	Special Materials
Galvanized steel	Sanitary Pipeline Series	Titanium and titanium alloy steel

High Precision Galvanized Steel Heat Exchanger Tube ASTM B673 Uns N08925 Seamless and Welded Austenitic Stainless Steel

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