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Who We Are

We are a manufacturer specializing in the production of mine crushing equipment.

CBM is an international company group specialized in R&D, production, sales and service of the minerals and stone crushing machines, VU sand making system as well as industrial grinding mills. Not only is our group company the first batch of high technology key enterprise, but also it is the main production and export base for high-end mining machines. It has established 20 overseas business institutions and branches, with the products exported to more than 160 countries and regions throughout the world. China Customs’data (2009一2014) shows: Exports from Shibang Industrial Technology Co.Ltd ranked the Top one for six years in a row in China’s mining machinery industry.

Our History

  • 2015  -
  • Donations to the 50 "Men of Sace" who rushed to deal with the emergency in the Japan fukushima nuclear power station leakage accident.Got the authorizations of three utility model patents.

  • 2014  -
  • As one of famous enterprises in Shanghai, our company went to Hong Kong to sign the strategic cooperation agreement of "Cooperation•Win-win" of H.K. and Shanghai Pudong.

  • 2012  -
  • The production base of Binhai Industrial Park was official signed.The European style Impact Crusher was officially tapeout.Nigeria and Vietnam branch offices were established.

  • 2011  -
  • The five center of our company was established, and it marked the realization of the group management mode.Won the "Sand Industry Advanced Unit" title of honor.

  • 2010  -
  • The series products of sand making machine was formally awarded the label of "China's Aggregate Association Recommend Brand" by the China Aggregate Association.

About CB Machinery
How to calculate the area of one steel bar QuoraLet us consider a steel bar of 16 mm diameter & length of bar is 10 meter The calculation will be as follow-7850 kg per cubic meter x 1 numbers x 10 metres length x 3 142 x 0 016 metre diameter x 0 016 metre diameter 4 = 15 78 kg other method to calculate the weight of steel bar is d^2/162 5 where d= diameter of steel bar-steel reduction ratio calculator-,How to Calculate Reduction Ratio SciencingA gear-reduction ratio is calculated directly from the number of teeth on each gear The number of teeth is a simple value to obtain and that is all you need to complete this computation After you calculate this ratio you can use it for any other computation you -- need such as speed or torque …… Get More

Steel Design Faculty

Steel Design Notation a = name for width dimension A = name for area A g = gross area equal to the total area ignoring any holes Areq'd-adj = area required at allowable stress when shear is adjusted to include self weight A w = area of the web of a wide flange section as is A web AISC= American Institute of Steel Construction

Steel Warehouse Company Coil Calculators

Steel Coil Calculators Below you will find a useful and easy to use online tool for calculating the Coil Weight Maximum Coil OD and Coil Lineal Feet

What is Poisson s ratio University of Wisconsin–Madison

Poisson s ratio is the ratio of transverse contraction strain to longitudinal extension strain in the direction of stretching force Tensile deformation is considered positive and compressive deformation is considered negative

What is gear reduction ratio Quora

Gear reduction ratio refers to the ratio of the number of active gears to the instantaneous angular velocity of the number of driven gears For example the ratio of driving gears to driving gears is 10 1 and the drive gear ratio is 10 1 Gear reduction ratio is also called transmission ratio。

Help NRR Noise Reduction Rating Calculator

To calculate the level at the ear fist measure the worker s noise exposure either in dB A or dB C This level can be entered into the NRR Calculator along with information about the regulations that you are following OSHA or NIOSH as each of these uses a different calculation

4 Easy Ways to Determine Gear Ratio with Pictures

To determine gear ratio of a gear train with 2 gears start by identifying your gears The gear attached to the motor shaft is considered the first gear or the drive gear and the other gear whose teeth are meshed with the drive gear is considered the second gear or driven gear

Steel Braced Frame Bldg new University of Alabama

CE 331 Spring 2011 Analysis of Steel Braced Frame Bldg 5 11 Joist –unity check The unity check is the ratio of the demand Mu in this case over capacity φ Mn φ is the strength reduction factor for flexure and Mn is the nominal flexure strength

The Steel Reporter Reduction Ratio Calculator

Place to Search Steel Sell Steel Buy Steel Get Queries from Seller or Buyers of Steel Use Online Jominy Calculator Online Reduction Ratio Calculator Get All Steel News on our Web Portal Android App and IOS App of SteelReporter

Crusher Size Reduction Ratio Calculation Method

Generally every crusher machine is not the same here are several common crusher size reduction ratio The impact crusher size reduction ratio is 20 to 1 The vertical shaft impact crusher size reduction ratio is 4-8 to 1 The vertical roller mill size reduction ratio is 2-2 5 to 1 The hammer crusher size reduction ratio is 20 to 1

Forging Quality in Steel Ingot Manufacturing & Conversion

Forging Quality in Steel Ingot Manufacturing & Conversion Patrick Anderson Manager Advanced Modeling Paradigm shift from reduction ratio to measured soundness creating steel products and services to overcome their toughest challenges For more information visit


- You can calculate λc for the column the read the value of φcFcr/Fy The column strength will be equal to φcFcr/Fy x Ag x Fy EXAMPLE 3 2 Calculate the design strength of W14 x 74 with length of 20 ft and pinned ends A36 steel is used Solution • Step I Calculate the effective length and slenderness ratio for the problem • Kx = Ky

steel reduction ratio calculator kaolin equipment suppliers

The calculator computes required steel area and selects bars beam negative moment steel ratio exceeds maximum Forging Ratio Metal and Metallurgy engineering Eng-Tips Jul 10 2009· and reduction ratio RR for a single step is

Carbon Footprint Calculator Climate Change US EPA

The calculator estimates your footprint in three areas home energy transportation and waste Everyone s carbon footprint is different depending on their location habits and personal choices For an explanation of the calculator s assumptions and sources see the Assumptions and References page

On the Relation between Reduction Ratio and Mechanical

To investigate the relation between reduction ratio and mechanical properties of killed mild steel plates the following tests were carried out 1 Six 10-t ingots from a coarse austenitic-grained heat melted with a basic open hearth furnace were hot-rolled into several plates of different

Calculator qsc-forge

This weight calculator is intended for approximation only and does not necessarily indicate the exact weight QSC Forge is not responsible or liable for any errors resulted from the use of this calculator