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Hard Seal Ball Valve Ball

Semifinished Product Hard Seal Ball Valve Ball

Semifinished Product Hard Seal Ball Valve Ball

The Semifinished Product Hard Seal Ball Valve Ball is a precision-engineered intermediate manufacturing component designed for valve manufacturers, OEM assembly plants, and industrial maintenance workshops that require high-performance metal-seated ball production without investing in full spherical grinding systems.

This product features a fully precision-ground sealing sphere that already meets final roundness and surface roughness requirements, while leaving non-critical machining features—such as flow ports, stem slots, and connection geometries—for customer-side final processing.

By outsourcing the most capital-intensive stage of ball production (precision spherical grinding and hard seal surface finishing), manufacturers can significantly reduce equipment investment, shorten production cycles, and enter high-end hard seal valve markets with minimal barrier to entry.

It is widely used in hard seal ball valve OEM production, emergency valve manufacturing, alloy customization projects, and industrial repair operations.

Inquiry
Nominal Size  1"-40”
Pressure Rating  150LB-2500LB
Base Material  F304/F316 F51 F53 718 MONEL400
Coating ENP/STL/NI60/WC

Parameter

Specification

Product Type

Semifinished Hard Seal Ball

Sealing Surface

Pre-ground Metal Sealing Sphere

Machining Stage

Semi-finished (final port machining required)

Tolerance

±0.01 mm / up to ±0.005 mm

Roundness

≤ 0.003 mm

Surface Roughness

Ra 0.2 – Ra 0.4 (Sealing Zone)

Base Materials

F304, F316L, CF8, CF3M, F51, F53

Special Materials

Monel 400, Inconel 718, LF2, C6022 ……

Coating Options

WC, CrC, ENP, Ni60 overlay ……

Final Processing

CNC milling, slot cutting, port machining ……

About
Zhejiang Boshi Valve Technology Co., Ltd.

Zhejiang Boshi Valve Technology Co., Ltd was built initially in 2005. The company is located in the was built initially in 2005. The company is located in the No. 951, Jinhai Avenue, Yongxing Subdistrict, Longwan District, Wenzhou City, Zhejiang Province Building 25, 1st to 4th Floors. Boshi valve is a high tech valve ball supplier which integrates design, production, sales, and service. Our company provide high-quality products and services for customers at home and abroad.

 

Our products are backed by in-house facilities for roughcast forging and pressing, steel plate rolling and welding, seamless pipe forming, and CNC machining. Through a systematic, integrated, and process-driven management approach, we strictly control product quality and delivery schedules. As a result, we are highly praised and trusted by both new and long-term customers..

 

The materials produced and manufactured by our company include 2Cr13, A105, LF2, F316, F304, F51, and F53 include floating (Q41) balls, fixed (Q47) balls, three-way (T-shaped) balls, four-way balls, curved (L-shaped) balls, and V-shaped adjustment balls, special hard sealing balls, and marble or steel balls in various specifications, often using sub-arc welded hollow sleeves.

 

Surface treatments for spherical components include electroplating (ENP), ion TCC, and alloy spray coating (STL), ensuring high hardness, corrosion resistance, and wear resistance. The rough blanks undergo processes such as forging, casting, and coil welding, followed by heat treatments like solution treatment, annealing, tempering, normalizing, and quenching. We uphold the business philosophy of “quality first, integrity-based,” and continue to innovate with new technologies, new processes, and new materials to actively develop new product varieties.

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