CMP Thread bar

An Solid Bar made of metal with a solid structure, used in geotechnical engineering and mining engineering for strata support to ensure the stability and safety of engineering structures.

Performance Characteristics

• Mechanical properties: High tensile and shear strength, capable of effectively transmitting loads and limiting deformation and displacement of surrounding rock.

• Durability: After being treated with hot-dip galvanizing, anti-corrosion coating, etc., it can adapt to underground humid and corrosive environments, extending its service life.

• Construction convenience: The rod body is not easily deformed, the threaded design is easy to install accessories, and can be constructed using conventional anchor drilling machines

CMP Thread Bar, with "full chain strict control and reliable performance" as the core quality control highlight:

• Carefully selected raw materials: Select high-strength steel according to national standards, and inspect the material and mechanical properties before entering the factory.

• Strict production management: Full process inspection of forging, thread processing, anti-corrosion and other processes, with real-time control of parameters.

• Full inspection of finished products: Before leaving the factory, the tensile, shear, and anti-corrosion properties are tested one by one to ensure that each anchor rod meets the safety standards for support, providing peace of mind for multi scenario applications.



Cold-Rolled Thread bar: 900/1100MPa


Nominal Bar Diameter465057667590
Cross section area of bar(mm2) 172619602750348045606200
Ultimate load(kN)  189821563025382850166820
Yield load(kN) 155317642475313241045580
Elongation A5(%)6%
Nominal weight (kg/m)13.50 15.40 21.60 27.30 35.80 48.70 
Thread (Right-hand)CMP Internal standard 
Delivery lengths (m)1m,2m,3m,4m…….11.8m Other length can be special order


Cold-Rolled Thread bar: 830/1035MPa


Nominal Bar Diameter263236465057667590
Cross section area of bar(mm2) 5508101040172619602750348045606200
Ultimate load(kN)  5678341054173520282721344345686350
Yield load(kN) 454667843142316262179275436565000
Elongation A5(%)6%
Nominal weight (kg/m)4.30 6.40 8.20 13.50 15.40 21.60 27.30 35.80 48.70 
Thread (Right-hand)CMP Internal standard 
Delivery lengths (m)1m,2m,3m,4m…….11.8m Other length can be special order



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CMP Thread Bar Accessories


CMP Thread Bar is equipped with core accessories (Couplers, nut), which are precisely adapted, firmly connected, and stably supported to prevent loose threads.

• Quality control: All accessories are made of high-strength steel and undergo multiple quality control processes such as material testing, size calibration, and mechanical performance testing to ensure that they work together with anchor rods to withstand pressure and have strong durability.

• Customized services: We can provide customized support solutions based on the specifications of anchor rods and the requirements of engineering scenarios, by designing and producing accessories with special sizes and structures, and flexibly adapting them to personalized support plans.




Accessories(TBS)



Part #TypeDsc.Weight(kg)Material
261012CTBHex NutCTB26/SW44.5/L50.80.4545#/C1026 CD/40Cr/42CrMo
263010CTBCouplerCTB26/Ø47.6/L158.81.4145#/C1026 CD/40Cr/42CrMo
321012CTBHex NutCTB32/SW50/L63.50.7345#/C1026 CD/40Cr/42CrMo
323010CTBCouplerCTB32/Ø60.3/L139.72.2245#/C1026 CD/40Cr/42CrMo
361012CTBHex NutCTB36/SW54.7/L700.9245#/C1026 CD/40Cr/42CrMo
363010CTBCouplerCTB36/Ø63.5/L222.33.3145#/C1026 CD/40Cr/42CrMo
461012CTBHex NutCTB46/SW76.2/L101.62.4645#/C1026 CD/40Cr/42CrMo
463010CTBCouplerCTB46/Ø79.4/L222.35.4645#/C1026 CD/40Cr/42CrMo
571012CTBHex NutCTB57/SW92.1/L92.13.2245#/C1026 CD/40Cr/42CrMo
573010CTBCouplerCTB57/Ø98.4/L209.57.4945#/C1026 CD/40Cr/42CrMo
661012CTBHex NutCTB66/SW101.6/L1275.3645#/C1026 CD/40Cr/42CrMo
663010CTBCouplerCTB66/Ø108/L273.112.1245#/C1026 CD/40Cr/42CrMo
751010CTBLock NutCTB75/SW127/L38.12.7245#/C1026 CD/40Cr/42CrMo
751012CTBHex NutCTB75/SW127/L1279.0845#/C1026 CD/40Cr/42CrMo
753010CTBCouplerCTB75/Ø133.4/L279.420.6645#/C1026 CD/40Cr/42CrMo
Compatible Standards GB/T 699 - 2015,GB/T 3077 - 2015,ASTM A29/A29M,ASTM A322