Gold Member Since 2010
Audited Supplier
Puyang Zhongshi Group Co., Ltd.

Casing Centralizer, Sucker Rod Pump, Sucker Rods manufacturer / supplier in China, offering API 11b Class T Sucker Rod Coupling, API Certificated Valve Ball and Valve Seat, API Spiral Blade Cast Aluminum Centralizer and so on.

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Supplier Homepage Product Sucker rod pump API 11b Class T Sucker Rod Coupling

API 11b Class T Sucker Rod Coupling

FOB Price: US $0.8-3 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $0.8-3/ Piece
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Port: Qingdao, China
Production Capacity: 5000PCS/Month
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: API 11 B
  • Structure: Gear
  • Material: Stainless Steel
  • Product Name: Sucker Rod Coupling
  • Delivery: Promptly
  • Trademark: zhongshi
  • Specification: api 11B
  • HS Code: 0
  • Connection: Connection
  • Flexible or Rigid: Rigid
  • Standard: Standard
  • Sample: Provide
  • Payment: T/T or L/C
  • Transport Package: Paper Box
  • Origin: China
Product Description

Class T and Class SM coupling for sucker rods are manufactured as per API Specification 11B. For the thread cutting, we are using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
Class T coupling is using AISI 5140 to manufacture.The coupling is coated using phosphate chemical treatment or black oxide on customer's request.For Class SM coupling, the spray metal is a
specification hardening process and is applied on the base metal.
The couplings are available in full size, slim hole and over size.Also, combination couplings are available for different diameters (sub-coupling) for both Class T and Class SM couplings.
We recommend changing sucker rod couplings after three make-ups, provided the connection threads have been inspected and deemed acceptable for reuse. 
 
Technical Parameters
 
Full Size Coupling
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Thread D.(in)Length of Wrench Square
(mm)
Hardness(HRA)
5/8"38.10101.615/16"31.856-62
3/4"41.281-1/16"
7/8"46.001-3/16"
1"55.601-3/8"38.1
1-1/8"60.33114.31-9/16"
Slim Hole Coupling
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Thread D.(in)Length of Wrench Square
(mm)
Hardness(HRA)
5/8"31.75101.615/16"31.856-62
3/4"38.101-1/16"
7/8"41.301-3/16"
1"50.801-3/8"38.1
Full Size Sub-coupling
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Small End Thread D.Big End Thread D.Hardness(HRA)
5/8"-3/4"41.28101.615/16"1-1/16"56-62
3/4"-7/8"46.001-1/16"1-3/16"
7/8"-1"55.60114.31-3/16"1-3/8"
1"-1-1/8"60.33127.01-3/8"1-9/16"
 Slim Hole Sub-coupling
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Small End Thread D.Big End Thread D.Hardness(HRA)
5/8"-3/4"38.10101.615/16"1-1/16"56-62
3/4"-7/8"41.301-1/16"1-3/16"
7/8"-1"50.80114.31-3/16"1-3/8"
Full Size  Polished Connection
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Thread D.(in)Vanish ConeHardness(HRA)
5/8"38.10101.615/16"9O56-62
3/4"41.281-1/16"
7/8"46.001-3/16"
1"55.601-3/8"
1-1/8"60.33114.31-9/16"
 
Slim Hole Polished Connection

 
Size(in)Coupling O.D W(mm)
(+0.13,-0.25)
Length L(mm)
(+1.57,-0.00)
Thread D.(in)Vanish ConeHardness(HRA)
5/8"31.75101.615/16"9O56-62
3/4"38.101-1/16"
7/8"41.301-3/16"
1"50.801-3/8"
 
 Coupling Mechanical Properties

 
Tensile Strength Rm(Mpa)Yield Strength Rel(Mpa)Elongation Percentage A(%)Reduction Percentage of Area Z(%)
≥655≥405≥16≥48

API 11b Class T Sucker Rod Coupling

API 11b Class T Sucker Rod Coupling
API 11b Class T Sucker Rod Coupling
Packing details: plywood case or according to customer demand 
delivery time: 7 -30 days after payment


Company information
The predecessor of Henan Puyang Zhongshi Group Co.,Ltd. was the 5th Machine Repairing Factory of Puyang Zhongyuan Oil field, Sinopec Corp. In 1997, after being restructured according to the modern corporate system, the factory was named Puyang Zhongshi Group Co.,Ltd.

With registered capital of 60,840,000 yuan, Puyang Zhongshi Group is composed of 9 subsidiaries, including 8 manufacturers and 1 trade company. Zhongshi Group covers an area of 200,000 sq.m, including workshop area of 50,000 sq.m. Various kinds of production equipment values 38,600,000 yuan. It has a strong mechanical processing capability.

Our leading products are pumping unit , wellhead (X-mas tree), tubing pump & sucker rod pump, cementing accessories, down-hole tools,casing centralizer, drilling solid control series,float collar, pressure vessel ,camping house, air cannon, belt feeder ,float shoe and so on. They are mainly supplied to Central Asia, Southeast Asia, Africa and Middle East and many other countries.
Zhongshi Group has been the Tier One internet service provider of Sinopec. We passed ISO9001 quality management system certification and got approved to use API monograms on its oil machineries. So far, we have attained API 5CT, API 10D, API 11AX, API 11E and more are applying for.

With strong technical backup, reliable product quality, advanced marketing regime and good service system, this company wins popularity and recognition of vast consumers home and abroad.

 
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