Jiangsu Sheye Metal Co.,Ltd
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TP316H Stainless Steel Seamless Pipe

316H Stainless steel seamless pipe, also known as 1.4919 stainless steel seamless pipe, is an austenitic chromium-nickel-molybdenum stainless tube, in addition with nitrogen and boron.

Parameter

316H Stainless steel seamless pipe, also known as 1.4919 stainless steel seamless pipe, is an austenitic chromium-nickel-molybdenum stainless tube, in addition with nitrogen and boron.

They are intended for service at temperatures where creep and stress rupture properties are important. 1.4919 stainless steel seamless pipes have a very good resistance to raised temperature. Compared with 316 stainless, 316H stainless has many advantages, such as heat resistance, acid resistance and corrosion resistance. 316H stainless steel is a higher carbon variant of 316 stainless steel, which makes it more suitable for high temperature environment. The increased carbon content delivers a greater tensile and yield strength.

The austenitic structure of 316H stainless steel also gives it excellent toughness, even down to cryogenic temperatures. We supply and manufacture 316H pipe with a wide range of size, from 10.0mm to 1219mm. The wall thickness of it ranges from 0.5mm to 100mm. The common length of each pipe is 5.8m, 6.0m, 11.8m, 12m. The maximum length we produce is up to 18m. Sheye Metal can produce TP316H pipes in strict accordance with ASTM, EN, JIS, DIN standard to meet clients' different requirements.

These pipes can be cut to size and pipe with polished finish is also available. Sheye Metal owns advanced production equipments and testing instruments. We can inspect our seamless pipes with 16 channel ultrasonic testing machine, 8 channel ultrasonic flaw detector, double channel ultrasonic flaw detector, eddy current flaw detector, hydrostatic testing machine, or X-ray detector.

A lot of processing services, including punching, painting, beveling, chamfering are all available for us. With strong technical force, advanced equipment and skilled craftsmanship, Sheye Metal can manufacture 316H pipe and good quality is guaranteed. For metal, we are serious.

Specification

Size

OD: 10.0 ~ 1219mm; WT: 0.5 ~ 100mm; Length: 5.8m, 6m, 11.8m, 12m, Max.18m

Process

Seamless, Cold Drawn, Cold Rolled, Hot Rolled

Different Name

1.4919 Pipe
 X6CrNiMoB17-12-2 Pipe
 UNS S31609 Pipe

End

PE(Plain End), BE(Beveled End), NPT, BW(Butt Weld End)

Surface

Aid Pickling, Polishing, Brushing

Standard

ASTM A312, ASTM A213, EN10216-5, DIN 17456, DIN 17458, JIS G3459, JIS G3463

Theoretical Weight(kg/m)

Weight/meter = (OD-WT)*WT*0.02507    Both OD and WT in mm.

Note:
 OD is the specified outside diameter.
 WT is the specified wall thickness
 Stainless steel pipes shall be pickled free of scale. When bright annealing is used, pickling is not necessary.
 Plain ends cut and deburred will be furnished. If threaded ends or ends beveled for welding are desired, give details.

Delivery Conditions

Type of Condition

Surface Condition

HFD

Hot finished heat treated, descaled

Metallically Clean

CFD

Cold finished heat treated, descaled

Metallically Clean

CFA

Cold finished bright annealed

Metallically Bright

CFG

Cold finished heat treated, ground

Metallically bright-ground, the type and degree of roughness shall be agreed at the time of enquiry and order b

CFP

Cold finished heat treated, polished

Metallically bright-ground, the type and degree of roughness shall be agreed at the time of enquiry and order b

Note a: Combinations of the different conditions may be agreed at the time of enquiry and order;
Note b: The enquiry and the order shall indicate whether the roughness requirement applies on the internal or external tube surface.

Chemical Composition

Element

UNS S31609(316H)
      %

Tolerances, %

C, max

0.04 to 0.10

±0.01

Mn, max

2.00

±0.04

P, max

0.045

±0.005

S, max

0.030

±0.003

Si, max

1.00

±0.05

Ni

11.0 to 14.0

±0.15

Cr

16.0 to 18.0

±0.20

Mo

2.00 to 3.00

±0.10

Mechanical Properties

Alloy

Temper

Tensile Strength
      Min, MPa

Yield Strength, 0.2%
      Offset, min, MPa

Elongation in2 in. or
      50mm (or 4D), min, %

UNS S31609

Solution Annealed

515

205

35

Tolerances in Wall Thickness 

NPS Designator

Tolerance, % from Nominal

Over

Under

1/8 to 2-1/2 incl., all t/D ratios

20

12.5

3 to 18 inch., t/D up to 5% incl.

22.5

12.5

3 to 18 inch., t/D>5%

15

12.5

20 and larger, welded, all t/D ratios

17.5

12.5

20 and larger, seamless, t/D up to 5% incl.

22.5

12.5

20 and larger, seamless, t/D>5%

15

12.5

Note: t = Nominal Wall Thickness; D = Ordered Outside Diameter

Tolerances in Outside Diameter

NPS Designator

Tolerances in Outside Diameter

Over

Under

in.

mm

in.

mm

1/8 to 1-1/2, incl

1/64 (0.015)

0.4

1/32 (0.031)

0.8

Over 1-1/2 to 4, incl

1/32 (0.031)

0.8

1/32 (0.031)

0.8

Over 4 to 8, incl

1/16 (0.062)

1.6

1/32 (0.031)

0.8

Over 8 to 18, incl

3/32 (0.093)

2.4

1/32 (0.031)

0.8

Over 18 to 26, incl

1/8 (0.125)

3.2

1/32 (0.031)

0.8

Over 26 to 34, incl

5/32 (0.156)

4

1/32 (0.031)

0.8

Over 34 to 48, incl

3/16 (0.187)

4.8

1/32 (0.031)

0.8

Straightness Tolerances

Specified OD, in.

Specified Wall Thickness, in.

Maximum Curvature in any 3ft, in.

Maximum Curvature i Total Length, in.

Up to 5.0 incl.

Over 3% OD to 0.5, incl.

0.03

0.010 x length, ft

Over 5.0 to 8.0, incl.

Over 4% OD to 0.75, incl.

0.045

0.015 x length, ft

Over 8.0 to 12.75, incl.

Over 4% OD to 1.0, incl.

0.06

0.020 x length, ft

EN10216-5 1.4919 Seamless Stainless Steel Pipe Tolerance

Tolerances for Outside Diameter (D) and Wall Thickness (T) of 316H Cold Finished Seamless Stainless Steel Pipe/Tube

Tolerances on D≤219.1mm

Tolerances on T

Tolerance Class

Permissible Deviation

Tolerance Class

Permissible Deviation

D 3

±0.75% or ±0.3mm whichever is the greater

T 3

±10% or ±0.2mm whichever is the greater

D 4 a

±0.5% or ±0.1mm whichever is the greater

T 4 a 

±7.5 % or ±0.15mm whichever is the greater

Note a : Tolerance class D 4 and T 4 is specified for tubes ordered cold finished

Tolerances for Outside Diameter (D) and Wall Thickness (T) 

Outside Diameter D

Tolerances on D

Tolerances on T

mm

Tolerance Class

Permissible Deviation

Tolerance Class

Permissible Deviation

30 ≤ D ≤ 219.1

D 2

±1.0% or ±0.5mm whichever is the greater

T 1

±15% or ±0.6mm whichever is the greater b

T 2

±12.5% or ±0.4mm whichever is the greater

219.1 ≤ D ≤ 610

D 1

±1.5% or ±0.75mm whichever is the greater a

 

+22.5%   -15% C

T 1

±15% or ±0.6mm whichever is the greater d

T 2

±12.5% or ±0.4mm whichever is the greater e

Note a : The tubes shall be ordered with size ends. In the case a permissible deviation of the outside diameter of ±0.6% applied to the tube ends over a length of approx. 100mm.
 Note b : Applies to tubes with wall thickness T≤0.01 D and T≤4mm.
 Note c : Applies to tubes with wall thickness T≤0.05D
 Note d : Applies to tubes with wall thickness T:0.05D <T≤0.09D
 Note e : Applies to tubes with wall thickness T>0.09D

Tolerance on Exact Lengths

Length L

Tolerance on exact length

L ≤ 6000

+ 5
      0

6000 < L ≤ 12000

+ 10
      0

L > 12000

+ by agreement
      0

Tests of 316H Pipe
 1.Chemical Analysis (ASTM E345)
 2.Mechanical Properties (Tension: ASTM E8)
 3.Nondestructive Test
 3.1:100% Hydrostatic Test
 3.2:According to ASTM A450/A450M

Major Manufacturing Facilities for Stainless Steel Pipe and Fittings

No.

Equipment Name

1

Cold Rolled Machine(φ12~711mm)

2

Hydraulic Pressure Cold Drawing Machine(60T, 100T, 150T, 250T, 500T, 1000T)

3

Chain Cold Drawing Machine(5T, 10T, 20T, 65T)

4

Peeling Machine(φ60~160mm)

5

Piercing Mill(φ60~820mm)

6

Nature Gas Walking Beam Furnace ≤1250℃ (±10℃)

7

Nature Gas Solution Annealing Furnace  ≤1300℃ (±10℃)

8

Walking Baking Oven

9

Bright Annealing Oven (OD6-60mm; WT0.4-5mm)

10

Four-column Type Hydraulic Press Machine (φ108~1219mm)

11

Seven-roller Straightening Machine(≤φ711mm)

12

Vertical Straightening Machine(φ30~120mm)

13

Plastic Pickling Bath

14

Lathe & Horizontal Band Sawsφ1000mm Max

15

CNC Bending Machine(MPa32000KN Bending Length 6000mm & MPa24000KN Bending Length 13500mm)

16

Welding Machine (φ16*0.5~762*26mm)

17

7M Pipe Internal Automatic Welding Machine(OD:355-1500MM; L:1500-12000MM)

18

Pipe Wall Automatic Vertical Shot Blast Machine (8T/D)

19

CNC Lathe

20

NC Flame/Plasma Cutting Machine

21

Bend Cold Pushing

22

Three Cold Forming Machine

23

Stainless Steel Pipe Cold Pushing Machine

24

The Edge Planning Machine

25

Tube Electric Beveling Machine

26

Tube Beveling Machine/Beveling Machine

27

Chamfering Machine

28

Metal Circular Saw Cutting Machine/Cutting Machine

29

CNC Plasma Cutting Machine

30

Air Plasma Cutting Machine

31

Rolling Machine

32

P+T Automatic Plate System

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