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

Sub Coupling, API Sub Coupling, Full Size Sub Coupling manufacturer / supplier in China, offering API 11b Spray Metal Full Size Sub Coupling, Valve Pair API Titanium Carbide Valve Ball & Valve Seat, API 11ax Pump Parts Valve Pair Valve Ball and Seat and so on.

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Supplier Homepage Product Casing accessories API 11b Spray Metal Full Size Sub Coupling

API 11b Spray Metal Full Size Sub Coupling

Purchase Qty.:
1-999 1,000+
FOB Unit Price: US $50 US $2
Purchase Qty. (Pieces) FOB Unit Price
1-999 US $50
1,000+ US $2
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Port: Qingdao, China
Production Capacity: 10000piece/Month
Payment Terms: T/T, Western Union

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Basic Info
  • Model NO.: Sub Coupling
  • Grade/Class: Spray Metal
  • Material: AISI 5140
  • Transport Package: Plywood Case
  • Origin: Henan, China
  • Standard: API Spec 11b
  • Diameter Type: Fs(Full Size)
  • Trademark: Zhongshi
  • Specification: API, ISO
  • HS Code: 8431
Product Description
Product Description

API 11b Spray Metal Full Size Sub Coupling
1)  Basic Material: AISI5140(high quality carbon steel)
2)  Coat Material: Ni60A Alloy Coating
3) Coat  thickness: 0.010in-0.020in
4) Standard: API Spec11B
5) Type: full size(FS)
6)  Grade/Class: SM(spray metal)
7) Description
Couplings are manufactured from quenched and tempered micro alloyed steels.API couplings are furnished in two classes: Class T and Class SM (Spray Metal). The later has a superficial hardening process (based in nickel, chrome, boron and silicon) that provides better erosion and corrosion resistance. This coupling is also recommended Slim Hole (SH) couplings when required due to the tubing internal diameter limitations.
8) Parameter

gradeO.D(mm)Minimum lengh(mm)HardnessWeight(kg)Standard
3/4"19-T41.05~41.43101.6~103.1756-62HRA0.65API 11B
7/8"22-T45.75~46.1345.75~46.1356-62HRA0.8API 11B
1"25-T55.35~55.7355.35~55.7312-23HRA1.15API 11B

Company Information

Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. 
We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001, etc..  
Our  products mainly include: 
1. Casing Centralizer                          2.  Float Collar & Float Shoe 
3. Cementing Plug                              4.  Cementing Head
5.  Cement Basket                              6.  Tubing Pump / Rod Pump
7.  Valve Ball & seat                            8. Casing / Tubing Pipe and Coupling
9. Stage Collar                                    10. Pumping Unit
11. Air Blaster                                      12.  Sucker Rod
Our group have more than 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.  Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.

Contact Us


Add: 5th community, Zhongyuan Oilfield, Puyang, China

Tel: 0086-371-87096211 / 15838304721

Fax: 0086-371-87096212


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