Stud Bolt Supplier
Shengtian Group can provide a wide variety of studs such as Double-End, Tap-Ends, Combination, Single-End, All Thread, Collars, and Specials. Double-End studs are available in different types, including unfinished, finished (full or reduced body), and finished (full body). Shengtian Group can also provide stud bolts for pressure-temperature piping which conforms to the requirements of ASME B16.5 flange specifications or to special non-standard length.
Zinc Plated Studs Bolt with Nuts Used in high pressure bolting situations for pipeline, drilling, petroleum / petrochemical refining and general industry for sealing and flange connections all thread, tap end and double end stud bolts are the lion’s share of the industry. The all thread stud bolt is a threaded rod with 2 heavy hex nuts, while the tap end and double end are nut continuously thread, but have a body in the middle with one nut. In a tap end the short end of the stud bolt is designed with a UNC 3A fit to go into a tapped hole on the body of a larger machined or forged equipment.
In a flanged connection the size, length, diameter and number of bolt holes is dependent of flange type and pressure class of flange.
Stud Bolt grades and sizes are defined by industry standards in ASTM A193 and ASME B16.5 standards.
Standard U.S. bolt threads are defined in ASME / ANSI Unified Inch Screw Threads. The most commonly used Unified threads are UN, UNC, UNF in thread pitches associated to the diameter. The thread diameter/pitch combinations are measured by the number of threads per inch (TPI) accompanying each diameter.
At Shengtian we manufacture studs in a wide variety of ASTM grades and exotic grade high strength alloys.
Stud Bolt Ends At manufacturer’s option, ends or points may be rounded (oval), sheared, flat or saw cut and chamfered. When rounded, the stud shall have an oval point with a radius equal to approximately one times the basic stud diameter. When flat and chamfered, the end shall be chamfered from a diameter not exceeding the minor diameter of the thread to produce a length of chamfer or incomplete thread approximately equivalent to 2 times the thread pitch.
Length Stud bolt length is commonly measured end to end or first to first. The length of stud bolt, measured parallel to the axis, is the distance from first thread to first thread.
First thread is defined as the intersection of the major diameter of the thread with the base of the point. Stud bolts are normally available in 1/4 in. length increments.
Material
ASTM
Design-
tion |
Grade |
Service
Temp-
erature
Range |
Strength and Ductility |
Suitable
Nuts
(ASTM/
Grade) |
Tensile
Min.
psi |
Yield |
Reduction
of Area
R/A |
Elong-
tion
EL |
Alloy
Type |
AISI |
| ASTM A-193 |
B7 |
High Temp.
from 0 –
480ºC |
125,000 |
100,000 |
50 |
16 |
Cr-Mo |
(4140) |
A194 Gr 2H |
| ASTM A-193 |
B16 |
High Temp.
from 0 –
550ºC |
125,000 |
105,000 |
50 |
18 |
Cr-Mo V |
(4140M) |
A194 Gr 4 |
| ASTM A-193 |
B7M |
High Temp.
from 0 –
450ºC |
100,000 |
80,000 |
50 |
18 |
Cr-Mo |
(4140) |
A194 Gr 2HM |
| ASTM A-320 |
L7 |
Low Temp.
-100ºC |
125,000 |
105,000 |
50 |
16 |
Cr-Mo |
(4140) |
A194 Gr 4 or
A194 Gr 7 |
| ASTM A-193 |
B5 |
Up to 815ºC |
100,000 |
80,000 |
50 |
16 |
5% Cr |
(501) |
A194 Gr 3 |
| ASTM A-193 |
B6 |
Up to 450ºC |
110,000 |
85,000 |
50 |
16 |
13% Cr |
(410) |
A194 Gr 6 |
| ASTM A-193 |
B8 |
Low Temp.
-200 – 650ºC |
75,000 |
30,000 |
50 |
30 |
18% CR –
8% Ni |
(304) |
A194 B8 |
| ASTM A-193 |
B8M |
Low Temp.
-200 – 750ºC |
75,000 |
30,000 |
50 |
30 |
16%Cr –
10% Ni |
(316) |
A194 B8M |
| ASTM A-320 |
B8 |
Low Temp.
-200 – 650ºC |
75,000 |
30,000 |
50 |
30 |
18% Cr –
8% Ni |
(304) |
A194 B8 |
| ASTM A-320 |
B8M |
Low Temp.
-200 – 750ºC |
75,000 |
30,000 |
50 |
30 |
16% Cr –
10% Ni |
(316) |
A194 B8M |
| ASTM A-320 |
B8T |
Low Temp.
-200 – 650ºC |
75,000 |
30,000 |
50 |
30 |
13% Cr |
(321) |
A194 B8T6 |
| ASTM A-320 |
B8C |
Low Temp.
-200 – 650ºC |
75,000 |
30,000 |
50 |
30 |
18% CR –
8% Ni |
(347) |
A194 B8C |
| ASTM A-193 |
B8M
class 2 |
Low Temp.
-200 – 650ºC |
125,000 |
100,000 |
35 |
12 |
16% Cr –
10% Ni |
(304) |
A194 B8C |
| ASTM A-453 |
660 |
High Temp.
up to 750ºC |
130,000 |
85,000 |
18 |
15 |
High Iron
Superalloy |
660 (A286) |
A453 600 |
ASTM A-564
(cond. 900)
(cond. 1100) |
630 |
Med Temp.
up to 316ºC |
190,000
140,000 |
170,000
115,000 |
40
45 |
10
14 |
Precipitation
Hardening
STST |
630 (17-4) |
A564 630 |
| ASTM B-408 |
800 –
800H |
High Temp.
540ºC – 815ºC |
80,000 |
35,000 |
|
25 |
Incoloy |
— |
ASTM B408 |
| ASTM B-164 |
405 |
High Temp.
to 815ºC |
85,000 |
50,000 |
|
15 |
Monel |
— |
— |
| ASTM B-164 |
K500 |
High Temp.
650ºC – 423ºC
Low Temp.
650 ºC – 253ºC |
100,000 |
70,000 |
|
35 |
Monel |
— |
— |
| 600, 625, 718, x750 |
ASTM B446, B637 |
High Temp.
from 850ºC – 1090ºC |
100,000 |
80,000 |
|
30 |
Nickel Superalloy (Inconel) |
— |
— |
| B, C, X |
|
High Temp.
to 850ºC |
170,000 |
115,000 |
|
30 |
Nickel Superalloy (Hastalloy) |
— |
— |
| Incoloy |
925 |
High Temp.
to – 1000ºC |
176,000 |
120,000 |
40 |
24 |
Nickel Iron Chrome |
— |
— |
