Class Sm Full Size Coupling

US$135,000.00 1 Piece (MOQ)
Port:
Shanghai, China
Production Capacity:
10000
Payment Terms:
L/C, T/T

SAINTWAH INC.

Beijing, China

Last Login Date:

Aug 13, 2025

Main Products:

Low Temperature Air Transportion Equipment, Petroleum Oilfield Equipment, CNG Skid Tube, Gas Turbine, Construction Machinery, Petroleum Equipment, Steam Turbine, Gas Generator, Petroleum Cementing Unit, Petroleum Coiled Tubing Unit

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Product Description

Company Info

Basic Info.

Model NO.
Class SM Full Size Coupling
After-sales Service
Provided
Warranty
1 Year or 2000hours
Manufacturing Process
Casting
Surface Treatment
Sand Blast
Operation Pressure
Vacuum
Material
Cast Steel
Trademark
SAINTWAH
Transport Package
Skid
Specification
8, 350 x 2, 400 x 3, 000 mm
Origin
Saintwah Inc.
HS Code
8207801000

Product Description

Class SM Full Size Coupling

The sucker rod coupling have the same box thread size in each end are used for connecting sucker rod and/or pony rod, and/or sinker bars with sucker rod threads.

Product Description

Introduction

1. Introduction of rod coupling

The sucker rod coupling have the same box thread size in each end are used for connecting sucker rod and/or pony rod, and/or sinker bars with sucker rod threads.
The polished rod coupling have the same box thread size in each end are used for connecting polished rod and/or sinker bars with polished rod threads to the sucker rod string.

The sub-coupling have different sizes of box threads in each end are used for connecting two sizes of sucker rods or a polished rod to a sucker rod string.

2. Manufacturing specification: API 11B

3. Material

3.1. Chemical Composition
The material shall be per manufacturer's specification and shall have a maximum sulfur content of 0.05%.

3.2. Mechanical Properties

Mechanical properties shall be in accordance with the manufacturer's specification with a minimum tensile strength of 95,000psi(655MPa). One of the following means shall be used to conform to the tensile requirements:

---Determination of the metal material hardness of 56 to 62 HRA inclusive; or

---Material test report per 6.3.2.2 for the heat of steel from the original mill if further processing does not change mechanical properties; or

---A tensile test per ASTM A370, OR ISO 6892 with s minimum of two tests performed after final thermal processing.

Nominal value

Outer diameter mm+0.13
-0.25

Length mm +1.57
0

Wrench square length mm

Wrench square intervalmm 0-0.8

Mechanical performance

Hardness

Surface roughness

5/8 SH

31.8

101.6

-

-

Grade T, GradeSM
strength of extension
≥655MPa

Grade T
Matrix Hardness56-62
HRA;Grade SM
Spray coating hardness
≥595HV200
Thickness of coating layer
0.254-0.508mm

Grade T
≤1.6μm
2,Grade SM:≤0.2μm

 

5/8 FS

38.1

101.6

31.8

34.9

5/8 SH

38.1

101.6

-

-

3/4 FS

41.3

101.6

31.8

38.1

7/8 SH

41.3

101.6

-

-

7/8 FS

46

101.6

31.8

41.3

1 SH

50.8

101.6

-

-

1FS

55.6

101.6

31.8

47.6

1 1/8 SH

55.6

114.3

-

-

1 1/8

60.3

114.3

41.3

53.9

 

Grade & Steel for Coupling

Product

Type

Grade

Steel (AISI)

coupling

Sucker Rod Couplings
Sub couplings
Polished Rod Connections

T

5140, 1045

SM

5140, 1045

K

4620,4720

KD

4330

UHS

4142,4130,4330

 

 

Production

 

 

Our Company

 

SAINTWAH INC. sophisticated production equipment,detection means complete, strong technical force. Mainly includes the 800 tons of fully automatic intelligent horizontal forging machine, intelligent friction welding machine, 1000 tons of hydraulic straightening machine, 800 tons of hydraulic upsetting units and the most advanced heat treatment production line; Company has a staff of 268 people, including senior professional and technical personnel more than 50 people.

In 2008 the company officially became a member of China national petroleum corporation supplies suppliers. Products exported to Canada, the United States, Germany, Mexico, Australia, Turkey, Syria, Venezuela, Malaysia, Kazakhstan, Indonesia, India and so on more than 20 countries and regions.

We can accept the special requirement of order and technical cooperation, we are willing to work with global customers a friendly, equal and mutually beneficial trade.

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