David Lee

CopyRight Declaration

Dear all attention: All molds/moulds/toolings and drawings are the assets and property of our customers. We will not use the customer’s molds/moulds/toolings to produce any products for any party other than the mold owner, nor will we share the customer’s drawings and proprietary process information with any other irrelevant parties. Leesh Holdings Co., Ltd. 2026/1/13 […]

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Leesh Holdings Tin Bronze Part

GOST 613-79 Tin Bronze Tin Foundry Bronzes

GOST 613-79: Tin Foundry Bronzes Standard GOST 613-79: Tin Foundry Bronzes. Grades Standard Information Standard Number: ГОСТ 613-79 Title: Tin Foundry Bronzes. Grades Replaced Standard: ГОСТ 613-65 Implementation Date: January 1, 1980 Classification Code: ОКП 17 3620 Approved by: Decree of the State Committee of the USSR for Standards dated April 26, 1979 No. 1555

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ZG06Cr13Ni5Mo High Strength Martensitic Stainless Steel

ZG06Cr13Ni5Mo High Strength Martensitic Stainless Steel Castings International Equivalent Grades:Chinese Standard: ZG06Cr13Ni5Mo, 04Cr13Ni5Mo (New Grade), 0Cr13Ni5Mo (Old Grade), S41595 (Digital Grade)American Standard: ASTM S41500, UNS F6NMJapanese Standard: JIS SUS F6NM, JIS SCS6German Standard: DIN 1.4313European Standard: EN X3CrNiMo13-4 Abstract ZG06Cr13Ni5Mo is a super low carbon martensitic stainless steel casting material with excellent comprehensive properties. Through precise composition design and

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Induction Hardening

Induction Hardening from Leesh Professional Services

Leesh Holdings Co., Ltd. (Leesh), a leading engineering and manufacturing company based in Shenyang, China’s Heavy Industry Center, offers premium Induction Hardening services to global clients. As a multifaceted enterprise, Leesh specializes in various engineering and manufacturing solutions, with Induction Hardening being one of their core capabilities in the field of heat treatment. What is

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The Difference Between Surface Roughness and Surface Finish

Understanding the Difference Between Surface Roughness and Surface Finish In the field of mechanical engineering and manufacturing, understanding surface characteristics is crucial for ensuring product performance, functionality, and longevity. Two terms that are often used interchangeably but have distinct meanings are surface roughness and surface finish. Let’s explore the differences between these two important concepts. What

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Duplex Stainless Steel pump

Duplex Stainless Steel Casting Material

ASTM A890/A890M Standard Specification for Corrosion-Resistant Iron-Chromium-Nickel-Molybdenum Duplex Stainless Steel (Austenitic/Ferritic) Steel Castings for General Applications   Table 1. Heat Treatment Requirements Grade Heat Treatment 1A, 1B, 1C Heat to a minimum temperature of 1900°F (1040°C), hold for sufficient time to uniformly heat the casting to the specified temperature, quench in water, or otherwise rapidly

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Common Defects in Castings Investment Casting & Sand Casting

Common Defects in Castings During many years’ practical experience, the Leesh engineer team has made notes on common casting defects, helping people understand them better and try to avoid them. Casting defects cannot disappear completely, but you can control them by using better casting methods and strict process control. If you have any issue during

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