Round Link Chains Grade 2, C

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Diameter (d), mm

Diameter – diameter of round bar used for link manufacture

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Pitch (t), mm

Pitch – internal length of each separate link

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Grade

2

2-SM

C
Proof load, kN

Proof load – test load

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Break load, kN

Break load – load causing plastic deformation of rolled steel, which results in product failure

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Mining Chains

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137

1660

2220

Hardness
High-quality steel and heat treatment make it possible to obtain uniform hardness across the entire link surface within 345-385 HB with a tensile strength of not less than 800 MPa.

Material
Special high-strength alloy steel

Сoating
NSW – natural black
IOL – ISO 12924 preservation grease
TEC – TECTYL

Standard
Grade 2: DIN 22252;
Grade С, 2-SM: The standards of the manufacturer that meet the requirements of ISO 610-90 and supplemented by customer requirements.