Petroleum Machine Fittings

  Yantai Yunsheng Petroleum Machine Accessories, Co., Ltd , funded in 1997, presently is one of biggest enterprises producing double protection sucker rod couplings inside China. We now have more than 10 production lines then we can supply 20000 pcs SM sucker rod coupling per month. All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplings are made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.    Paramater of coupling perfomance： 3/4"*7/8"FS API Sub coupling 1）Type: T&SM   2）Material: Carbon steel AISI 5I40 or AISI 4135 3）SM Coupling Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）SM Coupling Surface Hardness: HRC 55-62 6）SM Coupling Coat Thickness(in): 0.01in ~ 0.02in 7）SM Coupling Hole rate: ＜2% 8）SM Coupling Min. Hardness of the layer: 595HV0.2 9）Standard: API Spec 11B 10）Coupling diameter: 3/4"*7/8" -O.D: 1-13/16"[46.04mm]    -Length: 4.5"[114.3mm] 11)Weight: 0.92 KG/Pcs 12)Package: wooden case 13)Payment Terms: T/T   Our New Products 1) Full Size SM Coupling with great bevel edge 2) Two-way Cambered Protection SM Coupling If you have any interest in our sucker rod couplings, please do not hesitate to let we know, and we’ll supply you with our high quality products and best services.  

  Yantai Yunsheng Petroleum Machine Accessories, Co., Ltd , funded in 1997, presently is one of biggest enterprises producing double protection sucker rod couplings inside China. We now have more than 10 production lines then we can supply 20000 pcs SM sucker rod coupling per month. All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplings are made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.    Paramater of coupling perfomance： 3/4"*7/8"SH API Sub coupling 1）Type: T&SM  2）Material: Carbon steel AISI 5I40 or AISI 4135 3）SM Coupling Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）SM Coupling Surface Hardness: HRC 55-62 6）SM Coupling Coat Thickness(in): 0.01in ~ 0.02in 7）SM Coupling Hole rate: ＜2% 8）SM Coupling Min. Hardness of the layer: 595HV0.2 9）Standard: API Spec 11B 10）Coupling diameter: 3/4"*7/8" -O.D: 1-5/8"[41.3mm]    -Length: 4.5"[114.3mm] 11)Weight: 0.61 KG/Pcs 12)Package: wooden case 13)Payment Terms: T/T   Our New Products 1) Full Size SM Coupling with great bevel edge 2) Two-way Cambered Protection SM Coupling If you have any interest in our sucker rod couplings, please do not hesitate to let we know, and we’ll supply you with our high quality products and best services.

   5/8"*3/4"FS API Sub coupling 1）Type: T&SM  2）Material: Carbon steel AISI 5I40 or AISI 4135 3）SM Coupling Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）SM Coupling Surface Hardness: HRC 55-62 6）SM Coupling Hole rate: ＜2% 7）SM Coupling Min. Hardness of the layer: 595HV0.2 8）Standard: API Spec 11B 9）Coupling diameter: 5/8"*3/4" 10)Package: wooden cases 11)Payment Terms: T/T

  5/8"*3/4"SH API Sub coupling 1）Type: T&SM  2）Material: Carbon steel AISI 5I40 or AISI 4135 3）SM Coupling Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）SM Coupling Surface Hardness: HRC 55-62 6）SM Coupling Hole rate: ＜2% 7）SM Coupling Min. Hardness of the layer: 595HV0.2 8）Standard: API Spec 11B 9）Coupling diameter: 5/8"*3/4" 10)Package: wooden cases 11)Payment Terms: T/T

  1-1/8 " FS API Class SM coupling 1-Type: SM  FS coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 1 -1/8" 10-Weight:1.29 KG/Pcs 11-Package: wooden cases 12-Payment Terms: T/T    

  1-1/8 "SH API Class SM coupling 1-Type: SM  SH coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 1 -1/8" 10-Weight:0.81 KG/Pcs 11-Package: wooden cases 12-Payment Terms: T/T

  7/8 " FS API Class SM coupling 1-Type: SM  FS  coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 7/8 " 10-Weight: 0.74 KG/Pcs 11-Package: wooden cases 12-Payment Terms: T/T  

  7/8 "SH API Class SM coupling 1-Type: SM  SH coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 7/8 " 10-Weight: 0.52 KG/Pcs 11-Package: wooden cases 12-Payment Terms: T/T

  3/4 " FS API Class SM coupling 1-Type: SM  FS coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 3/4 " 10-Weight: 0.60 KG/Pcs 11-Package: wooden cases12-Payment Terms: T/T

  3/4 "SH API Class SM coupling 1-Type: SM  SH coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2-Material: Carbon steel AISI 5I40 3-Spray Material： Ni60A Alloy Coating 4-Basic Hardness: HRC 16-23 5-Surface Hardness: HRC 55-62 6-Hole rate: ＜2% 7-Min. Hardness of the layer: 595HV0.2 8-Standard: API Spec 11B 9-Coupling diameter: 3/4 " 10-Weight: 0.47 KG/Pcs 11-Package: wooden cases 12-Payment Terms: T/T

   5/8 "FS API Class SM coupling 1）Type: SM  FS coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2）Material: Carbon steel AISI 5I40  or  AISI 4135 3）Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）Surface Hardness: HRC 55-62 6）Hole rate: ＜2% 7）Min. Hardness of the layer: 595HV0.2 8）Standard: API Spec 11B 9）Coupling diameter: 5/8 " 10)Weight: 0.56 KG/Pcs 11)Package: wooden cases 12)Payment Terms: T/T

  5/8 "SH API Class SM coupling 1）Type: SM  SH coupling New: Both-way Protection Globoidal Coupling Full size SM coupling with big chamfer 2）Material: Carbon steel AISI 5I40  or AISI 4135 3）Spray Material： Ni60A Alloy Coating 4)Basic Hardness: HRC 16-23 5）Surface Hardness: HRC 55-62 6）Hole rate: ＜2% 7）Min. Hardness of the layer: 595HV0.2 8）Standard: API Spec 11B 9）Coupling diameter: 5/8 " 10)Weight: 0.41 KG/Pcs 11)Package: wooden cases 12)Payment Terms: T/T

   7/8" FS API Class T coupling A. Type: T? ? B. Material: Carbon steel AISI 5I40 or AISI 4135 C. Basic Hardness: HRC 16-23D. Standard: API Spec 11B E. Coupling diameter: 7/8" F. Weight: 0.74 KG/Pcs G. Package: wooden cases H. Port: Tingdao/Yantai/Tianjin I. Payment Terms: T/T or L/C

  7/8"SH API Class T coupling A. Type: T? ? B. Material: Carbon steel AISI 5I40 or AISI 4135 C. Basic Hardness: HRC 16-23D. Standard: API Spec 11B E. Coupling diameter: 7/8" F. Weight: 0.52 KG/Pcs G. Package: wooden cases H. Port: Tingdao/Yantai/Tianjin I. Payment Terms: T/T or L/C

   3/4" FS API Class T coupling A. Type: T    B. Material: Carbon steel AISI 5I40 or AISI 4135 C. Basic Hardness: HRC 16-23D. Standard: API Spec 11B E. Coupling diameter:  3/4 " F. Weight: 0.60 KG/Pcs G. Package: wooden cases H. Port: Tingdao/Yantai/Tianjin I. Payment Terms: T/T or L/C

  3/4"SH API Class T coupling A. Type: T    B. Material: Carbon steel AISI 5I40 or AISI 4135 C. Basic Hardness: HRC 16-23D. Standard: API Spec 11B E. Coupling diameter:  3/4 " F. Weight: 0.47 KG/Pcs G. Package: wooden cases H. Port: Tingdao/Yantai/Tianjin I. Payment Terms: T/T or L/C

  5/8"FS API Class T coupling 1）Type: T    2）Material: Carbon steel AISI 5I40 or AISI 4135 3)Basic Hardness: HRC 16-234）Standard: API Spec 11B 5）Coupling diameter:  5/8 " 6)Weight: 0.56 KG/Pcs 7)Package: wooden cases 8)Port: Tingdao/Yantai/Tianjin 9)Payment Terms: T/T or L/C

  5/8"SH API Class T coupling 1）Type: T    2）Material: Carbon steel AISI 5I40 or AISI 4135 3)Basic Hardness: HRC 16-234）Standard: API Spec 11B 5）Coupling diameter:  5/8 " 6)Weight: 0.41 KG/Pcs 7)Package: wooden cases 8)Port: Tingdao/Yantai/Tianjin 9)Payment Terms: T/T or L/C

  1）Type: T&SM   including Full Size coupling , Slim Hole coupling and Both-way Protection Globoidal Sucker Rod Coupling2）Material: Carbon steel AISI 5I40（40Cr） or AISI 4135（35CrMo）3)Basic Hardness: HRC 16-234）Surface Hardness: HRC 50-65（SM）5）Hole rate: ＜2%（SM）6）Min. Hardness of the layer: 595HV0.2（SM）7）Standard: API Spec 11B 8）coupling diameter: 5/8"*3/4",3/4"*7/8",7/8"*1",1"*1-1/8" 9)Package: wooden cases10)Payment Terms: T/T ， L/C

  1）Type: SM   including Full Size coupling and Slim Hole coupling2）Material: Carbon steel AISI 5I40（40Cr） or AISI 4135（35CrMo）3)Basic Hardness: HRC 16-234）Surface Hardness: HRC 50-655）Hole rate: ＜2%6）Min. Hardness of the layer: 595HV0.27）Standard: API Spec 11B 8）coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"9)Weight:0.41- 1.10KG/PCS10)Package: wooden cases11)Payment Terms: T/T ， L/C

  1）Type: T   including Full Size coupling and Slim Hole coupling2）Material: Carbon steel AISI 5I40（40Cr） or AISI 4135（35CrMo）3)Basic Hardness: HRC 16-234）Standard: API Spec 11B 5）coupling diameter:  5/8 ",3/4",7/8",1",1-1/8"6)Weight: 0.41-1.10 KG/Pcs7)Package: wooden cases8)Port: Tingdao/Yantai/Tianjin 9)Payment Terms: T/T ， L/C