Supported by German precision manufacturing technology, our Chinese sales entity Shanghai Kampman Transmission Machinery Co., Ltd. provides super nut custom development, customization service and factory quotation. KPMBOLT super nuts adopt forged nut body and German imported jack screws, suitable for petrochemical high-pressure pipelines, reactors and heat exchangers with high temperature, high pressure and corrosive working conditions.
The petrochemical industry operates continuously with high requirements for equipment safety and sealing stability. Core equipment such as high-pressure process pipelines, heat exchangers, high-pressure reactors, compressors and pump flanges work under extreme conditions including high temperature, high pressure, alternating medium impact and chemical corrosion. Ordinary standard fasteners are prone to stress relaxation, creep deformation, loosening and fatigue fracture, which will cause medium leakage, pressure relief and unplanned shutdown, bringing major safety risks and economic losses to petrochemical enterprises.
Endowed with century-long German heavy-duty fastening technology, our company is a professional super nut manufacturer and reliable super nut production factory. As the domestic sales entity, Shanghai Kampman Transmission Machinery Co., Ltd. focuses on petrochemical equipment supporting services. The full-seriesKPMBOLT super nuts are developed for extreme petrochemical working conditions, providing one-stop services including super nut custom development, non-standard customization, real-time factory quotation and original German super nut factory quotation.
All KPMBOLT super nuts adopt integral forged nut body with compact internal structure, effectively avoiding deformation and cracking under high pressure. The core jack screws are all original imported from Germany, with excellent anti-fatigue and anti-fracture performance, completely eliminating core failure risks under harsh chemical working conditions. To shorten domestic delivery time and optimize procurement cost, we have built precision processing bases in Nanjing and Shijiazhuang, adopting the mature model of “German imported core parts + domestic precision finishing” to balance German original quality, fast delivery and high cost performance.
Our five-type multi-material system fully covers all petrochemical working conditions with precise matching:
1. General High-pressure Grade: ASTM A193 B7 / 42CrMo KPMBOLT Super Nut
Suitable for conventional medium-temperature and high-pressure pipelines, common heat exchangers and valve connections without strong corrosion. With stable technology and cost performance, it is the most widely used fastening solution for general petrochemical equipment.
2. High-temperature Creep-resistant Grade: ASTM A193 B16 KPMBOLT Super Nut
Applied to high-pressure reactors, high-temperature steam pipelines and furnace flanges. Vanadium-reinforced material maintains stable preload under long-term high temperature and high pressure, preventing flange leakage and equipment failure caused by high-temperature relaxation.
3. Heavy Impact Fatigue-resistant Grade: 40CrNiMo / 4340 KPMBOLT Super Nut
Specially designed for reciprocating compressors and high-pressure delivery pumps under frequent alternating impact load. Nickel alloy material provides excellent toughness and fatigue resistance, avoiding fatigue fracture and loosening failure of power equipment fasteners.
4. Medium-high Temperature Age-hardened Grade: ASTM A453 660B / A286 KPMBOLT Super Nut
Adapted to dry sulfur-containing pipelines and medium-high temperature treatment equipment. It effectively inhibits preload attenuation under medium-high temperature environment and ensures long-term fastening stability.
5. Extreme Corrosion-resistant Grade: Inconel 718 KPMBOLT Super Nut
Certified by NACE MR0175, this nickel alloy material resists sulfide stress cracking and chloride corrosion. It is the ultimate solution for desulfurization equipment, offshore chemical pipelines and other ultra-harsh corrosive working conditions.
Adopting German pure axial preload structure, KPMBOLT super nuts produce no extra shear stress or bending moment during installation. The uniform preload distribution fundamentally resists loosening caused by pressure fluctuation and temperature alternation. Products can directly replace original petrochemical fasteners without on-site modification, suitable for narrow and compact equipment installation spaces.
We support exclusive super nut custom development and non-standard customization for special petrochemical equipment and extreme working conditions. All products are fully traceable and equipped with complete official compliance documents:
1. Original Copy – Metal Material Test Report
2. Material Re-inspection Report
3. Hardness Test Report
4. Ultrasonic Testing Report
5. Mechanical Properties Report
6. Magnetic Particle Inspection Report
7. Dimensional Inspection Record
8. Photo of the Packaging
With forged body structure and German imported core parts, KPMBOLT super nuts feature outstanding high temperature resistance, high pressure resistance and corrosion resistance. The long maintenance-free cycle matches the overhaul cycle of petrochemical devices, greatly reducing unplanned shutdown losses and safety hazards. Relying on German technical advantages, dual-base production capacity and the professional service of Shanghai Kampman Transmission Machinery Co., Ltd., we provide safe, stable and long-term fastening guarantees for petrochemical enterprises, supporting the safe and efficient continuous operation of the petrochemical industry.
References:
[1] Safety Specification for Petrochemical Equipment Fasteners;
[2] KPMBOLT Multi-material Manufacturing Inspection Plan;
[3] Research on Fastener Performance Under High-temperature and High-pressure Corrosive Conditions.