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Offer
From Non Premium Member |
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Type: |
Sell |
Subject: |
Mid-Point Test Sieves |
Description: |
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. Summary 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.
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Placement Date: |
May 12, 2012 |
Expiration Date: |
May 12, 2013 |
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Company Name: |
Hebei Hengfeng Test Sieves Factory |
Contact Person: |
li li |
City: |
hengshui |
Country: |
China
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Local Time: |
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E-mail: |
Premium
Membership Required (Join Free Today) |
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Introduction: |
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.
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Business Type: |
Manufacturer |
Areas of Interest: |
1. Raw Materials/Mines & Minerals
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