Type of Fasteners:

• Hex head bolts and screws, High strength bolts for Structural application, Full thread stud bolts, Double-end stud bolts , Socket head cap/set screws, Welded stud, Anchor bolts, U bolts sets, Clamp sets, Insulation clamp sets.
• Hex nuts, Heavy hex nuts, High strength nuts for Structural application, lock nuts
• Plain washer, spring washer, square taper washer, DTI
• Non standard fasteners
• API 20E BSL1、BSL2、BSL3 Bolts and Nuts

Dimension Standards:

• American standard：ASME B18.2.1、ASME B18.2.2
• ISO：ISO 4016、ISO 4017、ISO 4032、ISO 4033
• Germany standard：DIN 933、DIN 934
• Russia standard ：GOST R 52643、GOST R 52644、GOST R 52645
• China standard：GB、HG、SH、NB、JB

Coating:

• RocCote base coating:
  Zinc plating, Zinc Phosphate, Manganese Phosphate, Zn-Ni plating, Whitford® Xylar®2, Whitford® Xylan® 4090 Sheradizing and Etc.
• Top coating:
  Whitford® Xylan® 1424、1014、1070、1052
• Color of coating:
  Blue, Green, Yellow, Red, Black and Etc.

• Stainless steel and alloy steel pipes used for orientation
• Using Teflon lined (PTFE) has low friction, self lubricating, maintenance-free, high load, adaptability and other characteristics
• Part of U-bolts and nuts can be galvanized, hot dip zinc plating, cadmium, xylan and other corrosion protection to meet different requirements
• Size: 1 / 2 "- 8"
• Operating temperature: -35 ℃ - 125 ℃

Corrosion prevention as common U-bolts and pipe caused by contact between the accelerated corrosion of metal. Corrosion and erosion over the final holes into pinhole leaks. Using sharp U-rubber bolts step can remove the above-corrosion.

• Roc-Master U-bolt rubber sheath for the ethylene-propylene rubber, and its superior resistance to ultraviolet radiation, even prolonged exposure to direct sunlight and still maintain stability; maximum working temperature can reach 160 degrees. Low surface friction coefficient, tear capability and, in the bolts are tightened to protect pipe coating from damage, both insulation and cushioning effect.

• Hot-dip zinc plating, cadmium, XYLAN coated U-bolts to ensure the bulk of the corrosion resistance, but can also provide stainless steel bolts.

• For diameter: 1/2-36 "DN20-DN900

• U-bolt material: carbon steel, alloy steel, stainless steel, with four matching nut

• Bolt surface treatment: galvanized, hot dip zinc, xylan

RocCote Zinc Impregnation

RocCote® zinc impregnation is a surface protection process that utilizes thermal diffusion to form a zinc-iron alloy layer on steel surfaces. This layer acts as a barrier, isolating the steel substrate from environmental factors such as radiation. In humid or marine environments, the zinc-impregnated layer also serves as a sacrificial anode, providing electrochemical protection to the steel substrate.

Applications of RocCote

RocCote® zinc-impregnated fasteners are widely used in marine oil and gas, chemical industries, steel structures, bridges, and other fields.

Advantages of RocCote

• Uniform Coating Thickness: Ensures consistent protection across the surface.
• High Hardness & Wear Resistance: Enhances durability and resistance to scratches.
• Strong Adhesion: Bonds tightly to the substrate, reducing delamination risks.
• Superior Corrosion Resistance: Effective in harsh environments like marine or chemical settings.
• Eco-Friendly & Safe: Low-temperature processing avoids hydrogen embrittlement and minimizes environmental impact.

For more details, refer to the original technical documentation or official product specifications.