Expansion Shell Rock Bolt

Industrial-grade expansion shell rock bolts for railway bridges and tunnels. Available in M6-M20 sizes with ±0.01mm precision tolerance. Made from steel, stainless steel, or custom materials with ISO9001 and SGS certifications. Features 100% quality inspection and multiple surface treatment options for durable infrastructure applications.

High-capacity M24 expansion shell assembly featuring left-hand thread design and zinc electroplating with gold passivation for superior corrosion resistance. ISO-compliant steel construction with dual-point expansion mechanism for secure anchoring in concrete, brick, and block materials. Customizable options available for specialized industrial applications.

High-grade steel expansion anchor bolt with HRC38-48 hardness and ≥500MPa tensile strength. Features expansion shell mechanism for secure anchoring in mining and tunneling. ISO 9001 certified, customizable, and easy to install with standard tools.

High-strength expansion anchor bolt with ≥200kN ultimate load and HRC38-48 hardness. Compliant with DIN, ASTM, ANSI standards. Ideal for rock support in mining and tunneling. Corrosion-resistant, customizable, and easy to install.

Expansion Shell Rock Bolt with HRC38-48 hardness and ≥200kN ultimate load. Features high tensile strength ≥500MPa, corrosion resistance, and ISO 9001 certification. Ideal for mining, tunneling, and construction. Customizable options available.

High-strength steel expansion shell rock bolt with HRC38-48 hardness and ≥500MPa tensile strength. Ideal for hard rock support in mining and tunneling. Features high corrosion resistance, easy installation, and customizable options. ISO 9001 certified.

High-strength expansion shell rock bolt with ≥200kN ultimate load and ≥400MPa yield strength. Three-leaf design ensures maximum grip in hard rock. ISO 9001 certified, customizable in DIN/ASTM/ANSI standards. Ideal for mining and tunneling ground support.

High-strength expansion shell rock bolt with ≥200kN ultimate load and HRC38-48 hardness. Features hexagon head, metric thread, and corrosion resistance. ISO 9001 certified, customizable for mining and tunneling support.

High-strength steel expansion shell rock bolt with ≥400MPa yield strength and ≥200kN ultimate load. Features three-leaf expansion mechanism for secure rock anchoring in mining and tunneling. Corrosion-resistant coating ensures long-term durability. ISO 9001 certified, customizable.

High-strength steel expansion shell rock bolt for underground mining roof support. Complies with GB/T14370-2007, hot dip galvanized for durability. Easy manual installation, ISO 9001 certified. Ideal for tunnel, slope, and foundation applications.

Made from high-quality steel with HRC38-48 hardness and high corrosion resistance. Supports ultimate loads ≥200kN with tensile strength ≥500MPa. ISO 9001 certified. Ideal for mining and tunneling rock support.

High-strength expansion shell rock bolt with ≥400MPa yield and ≥200kN ultimate load. Features metric thread, hexagon head for easy installation, and high corrosion resistance. Ideal for mining, tunneling, and civil engineering. ISO 9001 certified.

High-strength expansion rock bolt with HRC38-48 hardness and ≥500MPa tensile strength. Features a three-leaf expansion shell for secure anchoring in mining and tunneling. ISO 9001 certified, corrosion resistant, and customizable per DIN, ASTM, ANSI, GB, JIS, BSW standards.

High-strength expansion shell rock bolt for mining and tunneling. Features hexagon head, three-leaf design, tensile strength ≥500MPa, and high corrosion resistance. Complies with DIN, ASTM, ANSI, and ISO 9001 certified. Custom options available.

High-strength steel expansion shell rock bolt with ≥200kN ultimate load and ≥500MPa tensile strength. Ideal for hard rock mining and tunneling. ISO 9001 certified, corrosion resistant, and compatible with standard drill bits. Custom colors and payment terms available.

High-strength expansion shell rock bolt with HRC38-48 hardness and ≥500MPa tensile strength. Ideal for mining and tunneling rock support. ISO 9001 certified, customizable standards, and easy installation with hexagon head.

High-strength expansion shell rock bolt with ≥400MPa yield strength and ≥200kN ultimate load. Metric thread, corrosion-resistant steel. Ideal for mining and tunneling rock support. ISO 9001 certified, customizable colors.

High-strength expansion shell rock bolt with HRC38-48 hardness and ≥500MPa tensile strength. Features three-leaf expansion mechanism for secure anchoring in mining and tunneling. ISO 9001 certified, customizable standards, and corrosion resistant.

Expansion Shell Rock Bolt with metric thread, yield strength ≥400MPa, and tensile strength ≥500MPa. ISO 9001 certified, compatible with hard rock drill bits. Ideal for underground mining and tunneling. Durable bolt and nut assembly ensures reliable rock support.

High-strength steel expansion shell rock bolt with ≥400MPa yield and ≥500MPa tensile strength. Features three-leaf expansion for secure anchoring in unstable rock. ISO 9001 certified, corrosion-resistant, and easy to install for heavy-duty mining and tunneling applications.