Electrified Railway Equipment Clamp

Product Overview

The Electrified Railway Equipment 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. 3) DTR-S Double-hole Copper Terminal 4) Copper Equipment Clamp for Double Conductor

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	Φ	D	d	L	L2	W	S
DTR-25	10.5	12	8.5	79	27	20	3
DTR-35	10.5	14	9.6	87	29	23	3.5
DTR-50	12.5	16	12	95	31	26	4
DTR-70	12.5	18	13	105	35	28	4.5
DTR-95	14.5	20	15	112	38	30	5
DTR-120	14.5	22	16	118	40	34	5.5
DTR-150	16.5	25	18	125	42	38	6
DTR-185	16.5	27	20	136	48	42	7
DTR-240	21	30	23	160	57	48	8

Model	Φ	D	d	L
DTGR-25	10.5	12	8.5	66
DTGR-35	10.5	14	10	72
DTGR-50	12.5	16	12	80
DTGR-70	12.5	18	13	87
DTGR-95	14.5	20	15	96
DTGR-120	14.5	22	16	103
DTGR-150	16.5	25	18	115
DTGR-185	16.5	27	20	120
DTGR-240	21	31	24	135

Model	Φ	D	d	L	L2	L3	W	S
DTR-25S	10.5	12	8.5	93	36	20	20	3
DTR-35S	10.5	14	9.6	100	40	20	23	3
DTR-50S	12.5	16	12	115	45	25	26	3.5
DTR-70S	12.5	18	13	123	48	25	28	3.5
DTR-95S	14.5	20	15	132	50	30	30	4
DTR-120S	14.5	22	16	140	54	30	34	4.8
DTR-150S	14.5	25	18	152	56	35	37	5.5
DTR-185S	14.5	27	20	160	61	35	40	5.7
DTR-240S	16.5	30	23	170	65	40	45	7

Model	R	Plate Thickness			Plate Width
SST-70~95	7	6	8	10	80	100
SST-120~150	8	6	8	10	80	100
SST-185~240	10.5	6	8	10	80	100

Model	d	D	L	L1	L2	W	S
STR-25	8.5	14	115	50	50	30	4
STR-35	10	14	125	60	50	30	4.5
STR-50	11.5	16	125	60	50	40	4.5
STR-70	13.5	18	145	70	60	40	4.5
STR-95	15	20	155	70	65	40	5.5
STR-120	16.8	22	165	75	70	40	6
STR-150	19	25	175	75	80	50	7
STR-185	21	27	185	80	80	50	7
STR-240	24	30	185	80	85	50	7

Model	d	D	L	L1	L2	L3	W	S
STR-25S	10.5	14	135	50	70	35	30	4
STR-35S	10.5	14	145	60	70	35	30	4.5
STR-50S	10.5	16	145	60	70	35	40	4.5
STR-70S	12.5	18	155	70	70	35	40	4.5
STR-96S	12.5	20	160	70	70	40	40	5.5
STR-120S	14.5	22	165	75	70	40	40	6
STR-150S	14.5	25	175	75	80	40	50	7
STR-185S	14.5	27	185	80	80	40	50	7

Model	d	D	L	L1	L2	W	S
SYG-120A	16.7	24	135	50	50	48	8
SYG-120B	16.7	24	135	50	63	48	8
SYG-120C	16.7	24	158	50	63	48	8
SYG-150A	19	27	135	50	50	48	8
SYG-150B	19	27	135	50	63	48	8
SYG-150C	19	27	158	50	63	48	8

Model	d	D	L	L1	L2	W	S
SYG-120A	16.7	24	130	50	50	48	8
SYG-120B	16.7	24	130	50	63	48	8
SYG-120C	16.7	24	158	50	63	48	8
SYG-150A	19	27	135	50	50	48	8
SYG-150B	19	27	135	50	63	48	8
SYG-150C	19	27	158	50	63	48	8

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