SBT Transformer Copper Clamp

Product Overview

The SBT Transformer Copper Clamp is a specialized power line hardware designed for critical hardware component for overhead power line construction, ensuring reliable mechanical and electrical performance. Widely recognized in the industry under alternative names including line fitting, overhead hardware, power fitting, line hardware, this product serves as a critical component in overhead power transmission and distribution systems systems. 2) Single-Hole Flat Plate Transformer Copper Clamp (Unpunched) 3) Single-Hole Flat Plate Transformer Copper Clamp (Punched)

Advantages

• “Precision manufacturing” — CNC machining and forging processes ensure dimensional accuracy and consistent quality
• “Durable surface treatment” — hot-dip galvanizing per ISO 1461/ASTM A153 provides long-term corrosion protection
• “High mechanical strength” — designed to withstand rated breaking loads with appropriate safety margins
• “Standardized interfaces” — compatible with common insulator, conductor, and support hardware specifications
• “Field-proven reliability” — tested per IEC/GB standards for mechanical and electrical performance

Technical Parameters

Model	Applicable Stud Thread (mm)	Applicable Conductor (mm2)	Main Dimensions (mm)
			M	W
SBT-M12	12	35~120	12	50
SBT-M14	14	50~150	14	50
SBT-M16	16	50~150	16	50
SBT-M18	18	95~240	18	60
SBT-M20	20	95~240	20	60
SBT-M22	22	150~400	22	70
SBT-M24	24	150~400	24	70

Model	Applicable Stud Thread (mm)	Applicable Conductor (mm2)	Main Dimensions (mm)
			M	W
SBT- $P_{1-0}$ -M12	12	16~150	12	50
SBT- $P_{1-0}$ -M14	14	16~150	14	50
SBT- $P_{1-0}$ -M16	16	35~185	16	50
SBT- $P_{1-0}$ -M18	18	70~240	18	60
SBT- $P_{1-0}$ -M20	20	70~240	20	60
SBT- $P_{1-0}$ -M22	22	185~300	22	70
SBT- $P_{1-0}$ -M24	24	185~300	24	70

Model	Applicable Stud Thread (mm)	Applicable Conductor ( ${\mathrm{{mm}}}^{2}$ )	Main Dimensions (mm)
			M	W	Ø
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{12}$	12	16~150	12	50	14.5
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{14}$	14	16~150	14	50	14.5
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{16}$	16	35~185	16	50	16.5
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{18}$	18	70~240	18	60	16.5
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{20}$	20	70~240	20	60	16.5
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{22}$	22	185~300	22	70	21
SBT- ${\mathrm{P}}_{1 - 1} - \mathrm{M}{24}$	24	185~300	24	70	21

Model	Applicable Stud Thread (mm)	Applicable Conductor ( ${\mathrm{{mm}}}^{2}$ )	Main Dimensions (mm)
			M	W
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{12}$	12	16~150	12	40
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{14}$	14	16~150	14	40
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{16}$	16	35~185	16	40
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{18}$	18	70~240	18	50
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{20}$	20	70~240	20	50
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{22}$	22	185~300	22	50
SBT- ${\mathrm{P}}_{2 - 0} - \mathrm{M}{24}$	24	185~300	24	50

Model	Applicable Stud Thread (mm)	Applicable Conductor (mm2)	Main Dimensions (mm)
			M	W
SBT- $P_{2-2}$ -M12	12	16~150	12	40
SBT- $P_{2-2}$ -M14	14	16~150	14	40
SBT- $P_{2-2}$ -M16	16	35~185	16	40
SBT- $P_{2-2}$ -M18	18	70~240	18	50
SBT- $P_{2-2}$ -M20	20	70~240	20	50
SBT- $P_{2-2}$ -M22	22	185~300	22	50
SBT- $P_{2-2}$ -M24	24	185~300	24	50

Note: Dimensions may vary slightly based on manufacturing tolerances. Contact our engineering team for custom sizes or special requirements.

Material & Manufacturing

• Material: high-quality carbon steel, cast iron, or aluminum alloy
• Secondary components: hot-dip galvanized finish
• Surface treatment: Hot-dip galvanizing in accordance with ISO 1461 / ASTM A153 / IEC 61589, minimum zinc coating thickness 65 μm
• Manufacturing process: Precision forging, casting, or CNC machining of critical dimensions, followed by full galvanizing immersion. Dimensional accuracy controlled within ±0.5 mm tolerance on mounting interfaces
• Quality assurance: Every batch undergoes dimensional inspection, galvanizing thickness testing (magnetic or gravimetric method per ISO 2178), and visual surface examination. Mill test certificates (MTC) available upon request

Application Scope

• Critical hardware component for overhead power line construction, ensuring reliable mechanical and electrical performance
• Overhead transmission and distribution line construction
• Power grid upgrade and renovation projects
• Industrial and utility pole hardware assembly

Frequently Asked Questions

Q: What materials are used? A: Depending on the product type, materials include carbon steel, malleable cast iron, forged steel, cast aluminum alloy, or copper alloy. All components have hot-dip galvanized or equivalent corrosion protection.

Q: Are custom sizes available? A: We offer non-standard sizes and custom specifications for special project requirements. Contact our engineering team with your drawings or specifications.

Q: What quality certifications do you have? A: Products are manufactured under ISO 9001 certified quality management system. Mill test certificates (MTC) and third-party inspection reports are available upon request.

Industry Standards & Compliance

Standard	Scope
IEC 61589	Galvanizing requirements for overhead line hardware
ISO 1461	Hot-dip galvanized coatings on iron and steel articles
ASTM A153	Zinc coating (hot-dip) on iron and steel hardware
GB/T 2314	General requirements for overhead line fittings
GB/T 2317	Mechanical testing methods for overhead line hardware
DL/T 765.2	Suspension and strain hardware for overhead power lines