engineering fundamentals Hebei Hengfeng Test Sieves Factory

Hebei Hengfeng Test Sieves Factory

Hebei Hengfeng Test Sieves Factory is a professional company specializing in the production of test sieves. The company is located in Hebei-Anping which is close to a big northern Chinese port - Tianjin Port. So it enjoys the strategic location and convenient transportation.

Founded in 1992, our company covers an area of 18,000 square meters and registers 8.8 million RMB. After several years of unremitting efforts, the annual output has reached 22 million RMB and the company enlists 200 employees including 45 professional and technical staff. The company owns the most advanced equipment, strong technical force, scientific process, quality inspection system.

Our company always adheres to using the high-quality raw material, being responsible to the control of quality and establishing the principle-- "with quality to survival, with credibility to development". Our main products are all through strict quality inspection, so it is no doubt the product quality has met the international standards. Our products are trusted by foreign customers and then popularly sold in more than 40 countries and regions, such as Europe, America, Japan, the Middle East, Africa, South Korea, and Australia.

Hebei Hengfeng Test Sieves Factory is willing to provide the highest quality products and the first-class service for both domestic and international customers. Our company sincerely welcomes friends from all over the world to our company to discuss business and work together with each client to create a bright future.


Test sieves and sieve accessories equipment supplier for filtration

Contact zhigang xue
Address 11 Heping street, Anping, Hebei, China.
Country China
Telephone 86-318-5821607
Fax 86-318-5821607
 Showcase Products

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Working Sieves

What Do We Mean By Working Sieves?

Because we carry high precision Mid-Point and Mesh Certified Test Sieves (MCTS) we need to make a distinction between them and the work-horse sieves used day to day. These sieves that do not require special inspection but need to conform to the basic standards of ASTM E-11, we call Working Sieves. The Working Sieves are available in Brass frames with brass or Stainless Steel mesh. We also supply stainless steel frames with stainless steel mesh. Working Sieves are available with 8 inch and 12 inch diameter frames. The frames are full height and one half height depths.

These sieves are constructed using ASTM standard wire cloth (mesh) and are supplied with a Certificate of Conformance. The mesh has not been individually inspected. Each sieve has a serial number which is related to a lot number.

Working Sieves are used in a diverse range of industries that include construction, mining, food, soil testing pharmaceuticals. They can be checked against master stacks, master samples or calibration spheres (beads) to test for wear or mesh damage.

There are no more economical and practical sieves for everyday use where extra tight and traceable standards are not required.

These Working Sieves are the intelligent choice for the application that has a limited requirement for traceability but needs a work horse sieve to perform on test after test.


-Materials, Chemicals and Adhesives > Composites, Textiles and Reinforcements

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Woven Wire Mesh Sieves

Woven wire mesh sieves are the most widely used test sieves for all types of laboratory particle size analysis. They are made with only the highest quality materials and are available in diameter sizes of 38, 100, 150, 200, 250, 300, 315, 350, 400 and 450 mm, as well as 3, 8, 12 and 18 inches.

They can be supplied with aperture sizes ranging from 125 mm down to 20 μm and in full or half height versions.

Woven wire mesh sieves are available in frame materials of either brass or stainless steel with larger diameter sieves also available in plated steel. Other materials and sizes can be produced to order.

-Optical Components > Lasers

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Perforated Plate Sieves

Hengfeng manufacture a wide range of perforated plate sieves for the many industries that require them. These are available in diameter sizes of 200, 300, 315, 350, 400 and 450 mm.

Aperture sizes range from 125 mm to 4 mm in square hole and 125 mm to 1 mm in round hole.

Perforated plate sieves can be supplied in frame materials of either brass or stainless steel, and all are manufactured to the highest engineering standards to ensure quality and accuracy.

All 200 mm perforated plates are stainless steel. Larger Perforated plates in stainless steel on request.


-Materials, Chemicals and Adhesives > Metals and Alloys

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Mid-Point Test Sieves

What Is A Mid-Point Sieve?

A mid-point test sieve has had the mesh inspected. The sieve is then selected as a mid-point if the results give tolerances that are in the middle of the ASTM Standard. For example, the ASTM permissible variations for the mesh of a No. 40 sieve (425μ) are:

1:Average Opening ±19μ.
2:Opening Dimension of 396μ not exceeded by more than 5% of the openings.
3:maximum individual opening 502μ.

The mid-point would have a variation in Average Opening of ±9.5μ, opening dimension of 396μ not exceeded by more than 2.5% of the openings and a maximum individual opening of 463.5μ. The effect of this tightened tolerance is an improvement in variation of approximately 30%. These results are traceable to a NIST standard.

Where Should Mid-Point Sieves Be Used?

When a process requires a high level of repeatability, mid-points can be used on all sieve tests. However, the predominant application for the mid-point sieves is as master stack. A master stack is used to check and recalibrate sieves used in everyday testing.


If your process must have traceability and the precision and repeatability of your sieve testing results is critical to your process or customer requirements, Mid-Point sieves should be considered for the master stacks and for every day testing of supercritical processes.


-Manufacturing , Processing and Tooling > Electrode Discharge Machining (EDM)

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Mesh Certified Test Sieves

If your process must have traceability or sieve testing is critical to your process or customer requirements, the Mesh Certified Test Sieve (MCTS) could be the solution. the manufacturing process is thorough and tuned to provide a consistent result. In addition, the MCTS are available at economical prices.

-Manufacturing , Processing and Tooling > Electrode Discharge Machining (EDM)

Related Product Categories
Materials, Chemicals and Adhesives
Composites, Textiles and Reinforcements
Composites, textiles and reinforcements includes finished composite materials as well as component materials used to construct composites such as matrix resins, fillers, reinforcements, textiles, fibers, reinforcements and core materials.
Metals and Alloys
Any of various opaque, fusible, ductile, and typically lustrous substances that are good conductors of electricity and heat, form cations by loss of electrons, and yield basic oxides and hydroxides.
Optical Components
An acronym of Light Amplification by Stimulated Emission of Radiation. A laser produces an intense beam of monochromatic, coherent light. Includes Gas, Solid State, Excimer, Ion, and Dye types.
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