26710 JIC Female 74°Cone Seat
1. Raw Material: Carbon Steel & Stainless Steel available2. Standard Plating: Trivalent Zinc Plating ( Cr3 / Chrome Free ), Silver & Yellow3. ...
1. Raw Material: Carbon Steel & Stainless Steel available2. Standard Plating: Trivalent Zinc Plating ( Cr3 / Chrome Free ), Silver & Yellow3. ...
1. Raw Material: Carbon Steel & Stainless Steel available2. Standard Plating: Trivalent Zinc Plating ( Cr3 / Chrome Free ), Silver & Yellow3. ...
Our 10 years of customisation experience has created the OPK Fitting brand value.




A 250 bar return line on a 12-tonne excavator starts weeping at the pump port. The hose is sound, the clamps are tight, and the leak is at the joint where a straight-thread stud meets the port. In most cases like this, the joint is one of four O-ring fitting families, and the whole repair depends o...
View MoreA maintenance crew replaces a three-quarter-inch hose by matching the part number on the old layline. Same pressure rating, same fittings, same length. Ten weeks later the tube is blistered, the oil has gone dark, and the press is down for two shifts. Nothing about the pressure rating was wrong. Th...
View MoreA hydraulic hose can survive years of service, but the connection is often the weak point. Think about a 3/8-inch JIC male connector that starts to weep because the 74° sealing seat is scored. The maintenance supervisor replaces the hose, only to discover the port on the manifold is ORFS. Two diffe...
View MoreA standard hose fitting is a critical connector used in hydraulic systems to securely join hoses with other components such as pumps, valves, and cylinders. These fittings ensure a tight seal and efficient fluid transmission under high pressure, often exceeding 3,000 PSI. A reliable fitting can significantly reduce leakage risks and improve system efficiency by up to 15%.
Standard hose fittings are widely used across industries including construction, agriculture, and manufacturing, where durability and reliability are essential.
Our fittings are available in carbon steel and stainless steel. Carbon steel is suitable for general applications, while stainless steel is ideal for environments requiring high corrosion resistance, such as marine or chemical industries.
We use trivalent zinc plating (Cr3, chrome-free) with silver and yellow finishes. This eco-friendly coating enhances corrosion resistance while meeting environmental standards.
Our fittings pass a salt spray test of over 72 hours, and can reach up to 200 hours upon request, ensuring long-term durability in harsh environments.
Each product is protected with plastic caps and packed in carbon boxes to prevent damage during transportation and storage.
| Material | Corrosion Resistance | Application |
|---|---|---|
| Carbon Steel | Medium | General hydraulic systems |
| Stainless Steel | High | Marine and chemical industries |
About OPK Fitting
OPK FITTING Hydraulic Equipment Factory is a specialized domestic factory with hydraulic pipes and adaptors production experience. Our managing scope relates to various fields such as hydraulic systems etc.; Including all kinds of materials with different pressure levels, flexible hydraulic hoses with various size criteria, hose fitting, adaptor, etc.
They have been respectively applied in the hydraulic and fluid conveyance systems of industries, such as machinery, metallurgy petroleum, construction, ships, space-flight, agriculture, pharmaceutical, food, and so forth.
We provide OEM services where customers only need to provide drawings or samples. In addition, free samples are available to help customers evaluate product quality before mass production.
With proper material selection and maintenance, hose fittings can last 3–5 years or longer depending on working conditions.
Yes, we offer OEM customization based on customer drawings or samples to meet specific application requirements.
Yes, we provide free samples. Please contact our sales team to request samples and evaluate product quality.