Blog - Jinan Zhongchuan Equipment Co., Ltd.

26 2025.12

2.2.8 Heat TreatmentHeat treatment is a comprehensive technological process in which materials are heated, held at temperature, and cooled within a specific medium to control their properties by alter...

25 2025.12

II. Fastener Manufacturing Process (3)

2.2.6 TurningTurning is a type of machining that primarily uses lathes to perform cutting operations on work piece blanks to achieve the desired workpiece profile.Turning operations include lathe cutt...

28 2025.11

II. Fastener Manufacturing Process (2)

2.2.3 Pickling, Phosphating, and SoapingEquipment: Pickling tank, water rinsing tank, phosphating tank, soaping tank.Purpose of Pickling: To remove the oxide layer and rust from the surface of the wir...

27 2025.11

II. Fastener Manufacturing Process

2.2 Brief Introduction to Fastener Production Procedures2.2.1 Wire RodWire rod, also referred to as coil material or coiled stock, is produced by heating and rolling steel billets. (Due to inadequate ...

24 2025.10

Materials of Common Fastener

1.6 Materials of Common FastenerI. Classification of Common Fastener MaterialsStandard fasteners available on the market are primarily made from four types of materials: Carbon Steel, Stainless Steel,...

24 2025.10

Marking Methods of Fastener

1.5 Marking Methods of Fastener1. Referenced StandardsGB/T 1237-2000 "Fastener Marking Methods", GB/T 3099.1-2008 "Fastener Terminology - Threaded Fasteners, Pins and Washers".2. C...

05 2025.09

The Threads of Fasteners (4)

1.4 Thread Fit GradesThread fit refers to the degree of looseness or tightness between mating threads. The fit grade is a specified combination of deviations and tolerances applied to external and int...

05 2025.09

The Threads of Fasteners (3)

1.3.4 Thread DiameterThread diameters include the major diameter (D or d), minor diameter (D₁ or d₁), and pitch diameter. The major diameter of general-purpose threads and trapezoidal threads is als...

02 2025.08

Critical Role of the High Strength Bolt in Wind Turbine Systems

In the vast and complex structure of a wind turbine, the high strength bolt is an indispensable component, responsible for securing key parts together. Its quality and performance have a direct impact...