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AISI 304 / 316L / 321 /310S Seamless Stainless Steel Tube

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Negotiable MOQ: 100000 Tons (Price negotiable depending on order volume and customization)
Key Specifications
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Type:
Seamless
Warranty:
12 months
Technique:
Cold Drawn
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Zhongzheng Stainless Steel Co., Ltd.
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2Yrs
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Payment Methods:
Port of Shipment:
NINGBO
Delivery Detail:
10 days

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Type Seamless
Warranty 12 months
Technique Cold Drawn
Surface Treatment Polished
Usage Pipeline Transport, Boiler Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Chemical Industry, Mining, Special Purpose
Material Stainless steel
Section Shape Round
Transport Package Packed in Bundles or Plywooden Box
Specification Straight / U shape tube
Origin China
Basic Info.
Model NO.
stainless steel tube
Grade
300 Series
Certification
ISO
Shape
Round
Technique
Cold-Drawing
Surface Treatment
AP/BA/Polishing/Sand Blasting/Shot Blasting
Material
321 Stainless Steel
Outer Diameter
DN 6-600
Wall Thickness
Sch10s~Sch160
Length
Random Length or Fixed Length
Test
Hydraulic Test /Eddy Current Test/Ultrasonic Test
Delivery Time
Stock 7 Days; MTO 30 Days
Trade Terms
EXW, FCA, FOB, CFR, CIF etc.
Markings
According to A999/A999m
Transport Package
Packed in Bundles or Plywooden Box
Specification
Straight / U shape tube
Origin
China
HS Code
7304419000
Production Capacity
2000ton Per Month
Product Description
Product Description

厂房3

roduct Name Stainless Steel Seamless Pipes /Tubes
Труба Сталь конструкционная криогенная
Tubería de acero inoxidable sin costura
Tubos de Aço Inoxidável sem Costura
Tubo INOXIDABLE SIN COSTURA ASTM A-312 Grado 304 /304L
Company Inform 1.Name:WENZHOU GUOHAO STEEL., LTD  
2.Type: Manufacturer 
Material Austenitic:
TP304, TP304L, TP304H, TP309S, TP310S, TP316L, TP316Ti, TP317L, TP321, TP321H, TP347H , 904L, 254SMO
GOST Grade: 08х18н10т,12х18н10т(AISI 321), 10х17н13м2т(AISI 316Ti), , 20х23н18(AISI 310S), 06хн28мдт(AISI 904L), 08х18н10(AISI304)
EN Grade: 1.4301,1.4306,1.4311,1.4541,1.4401,1.4404,1.4550,1.4571,1.4429,1.4435,1.4436,1.4439
Duplex Stainless:
UNS S31803,UNS S2205,UNS S32750, UNS S32760
Nickel Alloy:
Incoloy: 800/800H/800HT 825 926 20 28 201 200
Inconel :718 600 601 625
Hastelloy: C-22 C-276 B-2 B-3 GH3030 GH3039 Cr20Ni80 ;
Monel400,K-500
Standard ASTM A312,ASTM A213,ASTM A269,ASTM A511,ASTM A789,ASTM A790
ASTM B161 B163 B165 B167 B407 B423 B444 B622 B677 B729 B983
EN 10216-5,DIN 17456
GB/T 14976,GB13296,GB/T 21833,GB/T 15011,GB/T 15062
GOST 9940,GOST 9941
SpecificationAISI 304 / 316L / 321 /310S seamless stainless steel tube D(Outer Diameter) 6mm-630mm ; 1/8inch-24inch 
T(Wall Thickness) 0.89mm-40mm ;  SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, SCH XXS & 10 SWG, 12 SWG, 14 SWG , 16 SWG, 18 SWG, 19 SWG, 20 SWG, 22 SWG
L(Length) Random length 5~7m
Fixed length 6m /6.096m /6.1m/12m 
or as customer's actual request
Surface

  • Annealing&Pickling

  • Polishing(180#-600#)

  • Bright Annealing

  • Sand Blasting

  • Shot Blasting
Pipe End

  • Plain End (PE)

  • Bevelled End (BE)

  • Threaded End (TE)
Markings GH-STEEL S.S SMLS PIPE ASTM A269 TP304 6.35 x 0.89 MM HEAT NO.:***********

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer's private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.
Flattening Test For material heat treated in a continuous furnace flattening tests shall be made on a sufficient number of pipes to constitute 5% of the lot, but in no case less than 2 lengths of pipe.
Hydrostatic or Nondestructive Testing Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test
Value Added Services Customize Length, Bending, Polishing, Shot Blasting, Drilling/Punching, Degreasing
Delivery Time

  • For ready stock :7 days after receiving the deposit of T/T

  • For MTO: 35 days after receiving the  deposit of T/T
Trade Terms EXW,FOB, CFR, CIF etc.
Loading Port Ningbo/Wenzhou/Shanghai
Remittance method TT/LC/CASH
Container 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM 
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM
Referenced Documents ASTM Referenced Standards
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A999/A999M Specification for General Requirements for Alloy and Stainless-Steel Pipes
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless-Steel Tubes
E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

wechat_2025-06-25_162216_461wechat_2025-06-25_162250_425wechat_2025-06-25_155738_560

Chemical Composition & Mechanical Performance For Stainless Steel Seamless Tube Pipe


 Mechanical Performance
Grade C Mn P S Si Cr Ni Mo N Ti Others Mpa (kgf/mm²) Elongation .(%) em 2" (min.) Hardness
(AISI) (max.) (max.) (max) (max.) (max.) (min.) (min.) (min.) (min.) (min.) HRB
(max.) (max.) (max.) (max.) (max.) Tensile strength (min.) Yield strength  (min.) (max.)
304 0,080 2,0 0,045 0,030 1,00 18,0 8,0



515 205 35 90
20,0 11,0
304L 0,035 2,00 0,045 0,030 1,00 18,0 8,0



485 170 35 90
20,0 13,0
304H 0,040 2,00 0,045 0,030 1,00 18,0 8,0



515 205 35 90
0,100 20,0 11,0
309S 0,080 2,00 0,045 0,030 1,00 22,0 12,0 0,75


515 205 35 90
24,0 15,0
310 0,150 2,00 0,045 0,030 1,00 24,0 19,0



515 205 35 90
26,0 22,0
310S 0,080 2,00 0,045 0,030 1,00 24,0 19,0 0,75


515 205 35 90
26,0 22,0
310H 0,040 2,00 0,045 0,030 1,00 24,0 19,0



515 205 35 90
0,100 26,0 22,0
314 0,200 2,00 0,045 0,015 1,50 24,0 19,0
0,11

515 205 35 90
2,50 26,0 22,0
316 0,080 2,00 0,045 0,030 1,00 16,0 11,0 2,00


515 205 35 90
18,0 14,0 3,00
316H 0,040 2,00 0,045 0,030 1,00 16,0 11,0 2,00


515 205 35 90
0,100 18,0 14,0 3,00
316L 0,035 2,00 0,045 0,030 1,00 16,0 10,0 2,00


485 170 35 90
18,0 14,0 3,00
316Ti 0,080 2,00 0,045 0,030 0,75 16,0 10,0 2,00 0,10 max 5x(C+N)-0,70
515 205 35 90
18,0 14,0 3,00
317L 0,035 2,00 0,045 0,030 1,00 18,0 11,0 3,00


515 205 35 90
20,0 15,0 4,00
321 0,080 2,00 0,045 0,030 1,00 17,0 9,0
0,10 max 5x(C+N)-0,70
515 205 35 90
19,0 12,0
321H 0,040 2,00 0,045 0,030 1,00 17,0 9,0
0,10 max 4x(C+N)-0,70
515 205 30 90
0,100 19,0 12,0
347 0,080 2,00 0,045 0,030 1,00 17,0 9,0


Nb:10xC-1,00 515 205 35 90
19,0 13,0
347H 0,040 2,00 0,045 0,030 1,00 17,0 9,0


Nb:8xC-1,00 515 205 35 90
0,100 19,0 13,0
S31254
254SMO		 0,020 1,00 0,030 0,030 0,08 19,50 17,50 6,00 0,18
Cu:0,50-1,00 t≤5mm 675 t≤5mm 315 35 90
20,50 18,50 6,50 0,25
t>5mm 655 t>5mm 310
904L 0,020 2,00 0,040 0,030 1,00 19,00 23,00 4,00 0,10 max
Cu:1,00-2,00 490 215
90
UNS 8904 23,00 28,00 5,00
UNS31803 0,030 2,00 0,030 0,020 1,00 21,00 4,50 2,50 0,080

620 450 25 HRC 30
23,00 6,50 3,50 0,20
UNS32205 0,030 2,00 0,030 0,020 1,00 22,00 4,50 3,00 0,14

655 485 25 HRC 30
23,00 6,50 3,50 0,20
SUPER DUPLEX UNS32750 0,030 1,20 0,035 0,020 0,80 24,00 6,00 3,00 0,24
Cu: 0,50 max 800 550 15 HRC 34
26,00 8,00 5,00 0,32
SUPER DUPLEX UNS32760 0,030 1,00 0,030 0,010 1,000 24,00 6,00 3,00 0,20
Cu:0,50-1,00 750 550 25 HRC 32
26,00 8,00 4,00 0,30 W:0,50-1,00

ANSI/ASME B36.10M B36.19M Dimension Comparison Table For Stainless Steel Seamless Tube Pipe

Norminal Pipe Size Outside Diameter Wall Thicknesses Schedule ANSI/ASME B36.10M,B36.19M
DN(in.) D sch5s sch10s sch10 sch20 sch30 sch40s STD sch40 sch60 sch80s XS sch80 sch100 sch120 sch140 sch160 XXS
1/8 10.3 --- 1.24 --- --- --- 1.73 1.73 1.73 --- 2.41 2.41 2.41 --- --- --- --- ---
1/4 13.7 --- 1.65 --- --- --- 2.24 2.24 2.24 --- 3.02 3.02 3.02 --- --- --- --- ---
3/8 17.1 --- 1.65 --- --- --- 2.31 2.31 2.31 --- 3.2 3.2 3.2 --- --- --- --- ---
1/2 21.3 1.65 2.11 --- --- --- 2.77 2.77 2.77 --- 3.73 3.73 3.73 --- --- --- 4.78 7.47
3/4 26.7 1.65 2.11 --- --- --- 2.87 2.87 2.87 --- 3.91 3.91 3.91 --- --- --- 5.56 7.82
1 33.4 1.65 2.77 --- --- --- 3.38 3.38 3.38 --- 4.55 4.55 4.55 --- --- --- 6.35 9.09
1¼ 42.2 1.65 2.77 --- --- --- 3.56 3.56 3.56 --- 4.85 4.85 4.85 --- --- --- 6.35 9.7
1½ 48.3 1.65 2.77 --- --- --- 3.68 3.68 3.68 --- 5.08 5.08 5.08 --- --- --- 7.14 10.15
2 60.3 1.65 2.77 --- --- --- 3.91 3.91 3.91 --- 5.54 5.54 5.54 --- --- --- 8.74 11.07
2½ 73 2.11 3.05 --- --- --- 5.16 5.16 5.16 --- 7.01 7.01 7.01 --- --- --- 9.53 14.02
3 88.9 2.11 3.05 --- --- --- 5.49 5.49 5.49 --- 7.62 7.62 7.62 --- --- --- 11.13 15.24
3½ 101.6 2.11 3.05 --- --- --- 5.74 5.74 5.74 --- 8.08 8.08 8.08 --- --- --- --- ---
4 114.3 2.11 3.05 --- --- --- 6.02 6.02 6.02 --- 8.56 8.56 8.56 --- 11.13 --- 13.49 17.12
5 141.3 2.77 3.4 --- --- --- 6.55 6.55 6.55 --- 9.53 9.53 9.53 --- 12.7 --- 15.88 19.05
6 168.3 2.77 3.4 --- --- --- 7.11 7.11 7.11 --- 10.97 10.97 10.97 --- 14.27 --- 18.26 21.95
8 219.1 2.77 3.76 ---
7.04 8.18 8.18 8.18 10.31 12.7 12.7 12.7 15.09 18.26 20.62 23.01 22.23
10 273.1 3.4 4.19 --- 6.35 7.8 9.27 9.27 9.27 12.7 12.7 12.7 15.09 18.26 25.4 28.58 25.4
12 323.9 3.96 4.57 --- 6.35 8.38 9.53 9.53 10.31 14.27 12.7 12.7 17.48 21.44 25.4 28.58 33.32 25.4
14 355.6 3.96 4.78 6.35 7.92 9.53 --- 9.53 11.13 15.09 --- 12.7 19.05 23.83 27.79 31.75 35.71
16 406.4 4.19 4.78 6.35 7.92 9.53 --- 9.53 12.7 16.66 --- 12.7 21.44 26.19 30.96 36.53 40.49
18 457.2 4.19 4.78 6.35 7.92 11.13 --- 9.53 14.27 19.05 --- 12.7 23.83 29.36 34.93 39.67 45.24
20 508 4.78 5.54 6.35 9.53 12.7 --- 9.53 15.09 20.62 --- 12.7 26.19 32.54 38.1 44.45 50.01
22 558.8 4.78 5.54 6.35 9.53 12.7 --- 9.53 --- 22.23 --- 12.7 28.58 34.93 41.28 47.63 53.98
24 609.6 5.54 6.35 6.35 9.53 14.27 --- 9.53 17.48 24.61 --- 12.7 30.96 38.89 46.02 52.37 59.54
26 660.4 --- --- 7.92 12.7 --- --- 9.53 --- --- --- 12.7
28 711.2 --- --- 7.92 12.7 15.88 --- 9.53 --- --- --- 12.7
30 762 6.35 7.92 7.92 12.7 15.88 --- 9.53 --- --- --- 12.7
32 812.8 --- --- 7.92 12.7 15.88 17.48 9.53 17.48 --- --- 12.7
34 863.6 --- --- 7.92 12.7 15.88 17.48 9.53 17.48 --- --- 12.7
36 914.4 --- --- 7.92 12.7 15.88 19.05 9.53 19.05 --- --- 12.7
38 965.2 --- --- --- --- --- --- 9.53 --- --- --- 12.7 Note: sch5s,10s,40s,80s Used for steel pipe fittings
40 1016 --- --- --- --- --- --- 9.53 --- --- --- 12.7
42 1066.8 --- --- --- --- --- --- 9.53 --- --- --- 12.7
44 1117.6 --- --- --- --- --- --- 9.53 --- --- --- 12.7
46 1168.4 --- --- --- --- --- --- 9.53 --- --- --- 12.7
48 1219.2 --- --- --- --- --- --- 9.53 --- --- --- 12.7


BWG Gauge Weight Chart for Tube Wall thickness (Heat Exchanger Tube & Condensers Tube & Boilier Tube)

Outside Diameter BWG
25 22 20 18 16 14 12 10
Wall Thickness mm
0.508 0.71 0.89 1.24 1.65 2.11 2.77 3.40
mm inch Weight kg/m
6.35 1/4 0.081 0.109 0.133 0.174 0.212


9.53  3/8 0.126 0.157 0.193 0.257 0.356 0.429

12.7  1/2
0.214 0.263 0.356 0.457 0.612 0.754
15.88  5/8
0.271 0.334 0.455 0.588 0.796 0.995
19.05  3/4
0.327 0.405 0.553 0.729 0.895 1.236
25.4 1   
0.44 0.546 0.75 0.981 1.234 1.574 2.05
31.75 1 1/4
0.554 0.688 0.947 1.244 1.574 2.014 2.641
38.1 1 1/2
0.667 0.832 1.144 1.514 1.904 2.454 3.233
44.5 1 3/4


1.342 1.774 2.244 2.894 3.5
50.8 2   


1.549 2.034 2.574 3.334 4.03
63.5 2 1/2


1.949 2.554 3.244 4.214 5.13
76.2 3   


2.345 3.084 3.914 5.094 6.19
88.9 3 1/2


2.729 3.609 4.584 5.974 7.27
101.6 4   



4.134 5.254 6.854 8.35
114.3 4 1/2



4.654 5.924 7.734 9.43
Stainless Steel Tube: A/SA213, A/SA269, A/SA789, EN10216-5, GOST9941-81.
Summary Standards
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes ASTM A 213 / A 213M
Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service ASTM A269 / A 269N
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes ASTM A312/A312M
Standard Specification for Seamless Stainless Steel Mechanical Tubing and Hollow Bar ASTM A511 / A 511M
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service ASTM A789/A789M
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe ASTM A790/A790M
Standard Specification For Seamless Stainless Steel Tubes,cold and hot finished GOST9941-81
Standard Specification For Seamless Stainless Steel Tube for Pressure purposes EN 10216-5

A269 A213 A312 A789 GOST9941  EN10216-5 Standard Tolerance for Stainless Steel Seamless Tube Pipe

Standard Outside Diameter Tolerance(mm) Thickness Tolerance(mm) Length Tolerance (mm)
ASTM A269 D ±0.13 ±15% +3.2 / -0
(12.7~38.1] ±0.13 ±10%
[38.1~88.9) ±0.25 +4.8 / -0
[88.9~139.7) ±0.38
[139.7~203.2) ±0.76
ASTM A213 D ±0.1 D≤38.1 +20%/ -0% D≤50.80 +3 / -0
[25.4~38.1] ±0.15
(38.1~50.8) ±0.2 D>38.1 +22%/ -0% D>50.8 +5 / -0
[50.8~63.5) ±0.25
[63.5~76.2) ±0.30
[76.2~101.6] ±0.38
(101.6~190.5] +0.38  / -0.64
(190.5~228.6] +0.38  / -1.14
ASTM A312 [10.29~48.26] +0.4  / -0.8 10.3~73 +20% / -12.5% +6 / -0
88.9~457 T/D≤5% +22.5% / -12.5%
(48.26~114.30] ±0.80 88.9~457 T/D>5% +15% / -12.5%
(114.30~219.08] +1.6  / -0.8 508above T/D +22.5% /-12.5%
(219.08~457.20] +2.4  / -0.8 508above T/D>5% +15%/-12.5%
ASTM A789 D ±0.13 ±15% +3 / -0
[12.7 to 38.1) ±0.13 ±10%
[38.1 to 88.9) ±0.25 +5 / -0
[88.9 to 139.7) ±0.38
[139.7 to 203.2) ±0.76
ГОСТ 9941-81 [5~10] Normal:±0.30
High:±0.20
Higher:±0.15		 T:0.2 Normal:±0.05;
High:±0.03		 /
T:0.3~0.4 Normal:±0.07;
High:±0.05
T:0.5~1.0 Normal:±0.15;
High:±0.10
[11~30] Normal:±0.40
High:±0.30
Higher:±0.20		 T:1.2~3.0 Normal:+12.5% / -15%;
High:±12.5%;
Higher:+12.5% / -10%
T:3.5~7.0 Normal:±12.5%;
High:+12.5% / -10%;
Higher:±10%
[32~95] Normal:±1.2%
High:±1%
Higher:±0.8%		 T:7.5~8.5 Normal:+12.5% / -10%;
Higher:±10%
EN10216-5 D3 ±0.75% / ±0.30mm T3 ±10%/ ±0.20mm L≤6m +5 +0
D4 ±0.5% / ±0.10mm T4 ±7.5% / ±0.15mm ≥6~12M +10-0

浙江中正宣传册-管子1_05包装和运输

FAQ

AISI 304 / 316L / 321 /310S seamless stainless steel tube1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.

2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.

3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.

4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.

5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.

6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.

7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.

8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.


Product Tags: Seamless stainless steel pipe

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Zhongzheng Stainless Steel Co., Ltd.
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2Yrs
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Main Markets
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