Stainless Steel Forged Steel Internal Thread Socket Welding Globe Valves

Stainless Steel Forged Steel Internal Thread Socket Welding Globe Valves are high-precision shut-off and regulating valves designed specifically for small and medium-bore, medium and high-pressure piping systems.Constructed from full forged steel and stainless steel materials, they support dual connection types: internal thread (NPT/BSPT) and socket weld (SW), which can be flexibly switched based on installation scenarios, balancing easy installation and connection strength. The valve controls medium flow and achieves precise flow regulation by driving the disc axially via the valve stem.With the dense structure of forged steel and corrosion resistance of stainless steel, it can operate stably under harsh conditions for a long time with reliable sealing and strong impact resistance.It is widely used in many industrial fields with high valve quality requirements and is an indispensable control component in small-bore high-pressure piping systems.

Core Performance Highlights

Integral Forged Steel Structure

The valve body is integrally forged, free of blowholes and porosity, with uniform and dense material and excellent mechanical strength.It can withstand long-term medium and high pressure up to PN16~PN100 (Class150~600), effectively avoiding risks such as body damage and medium leakage.

Dual Connection Flexibility

Supports both internal thread and socket weld connections without purchasing separate valves.Internal thread is ideal for narrow spaces and frequent disassembly; socket weld is preferred for high-vibration and high-strength applications, reducing procurement and installation costs.

High Corrosion Resistance & Sealing

Main body available in 304, 316, 316L forged stainless steel.Equipped with metal hard seal (Stellite hardfacing) or PTFE soft seal, suitable for corrosive and clean media.Sealing class complies with GB/T 13927 and API 598, ensuring zero visible leakage.

Multiple Actuation Options

Manual (labor-saving handwheel), miniature electric (multi-turn, explosion-proof available), miniature pneumatic (single/double acting).Suitable for both manual operation and remote control of small-bore pipelines, with easy operation and stable performance.

Applications

Stainless Steel Forged Steel Internal Thread Socket Welding Globe Valves are designed for small and medium-bore (DN10~DN50), medium and high-pressure service, especially for narrow spaces with high sealing and strength requirements. Typical industries:

● Petrochemical industry (chemical reagents, oil transportation)

● Natural gas transmission systems

● Power station auxiliary pipelines

● Precision instrument piping

● Marine and ship equipment

● Steam pipelines

● LPG pipelines

They can be used as shut-off valves or regulating valves to ensure safe and stable operation.

Technical Parameters

Material Configuration

Design & Manufacturing Standards

● Valve Design: GB/T 12235, API 602

● Face-to-Face: GB/T 12221, ANSI B16.10

● Thread: GB/T 7306, ANSI B1.20.1

● Socket Weld: GB/T 12224, ANSI B16.11

● Pressure-Temp: GB/T 12224, ANSI B16.34

● Testing: GB/T 13927, API 598, UT/MT/PT

● Material: GB/T 1220, ASTM A182, GB/T 13401

Selection Guide

Connection

Narrow space / frequent disassembly → Thread High vibration / high strength → Socket Weld

Body Material

General medium pressure → 304/316High pressure / strong corrosion → 316L

Seal Type

Particles / high wear → Metal hard seal (Stellite) Clean / zero leakage → PTFE soft seal General service → Body seal (cost-effective)

Actuation

Local operation → Manual Remote / automatic → Electric / Pneumatic Hazardous area → Explosion-proof type

Pipe Matching

Confirm thread type (NPT/BSPT) or pipe OD & wall thickness.

Installation & Maintenance

Before Installation

Check model, pressure, material, connection and size.Inspect forging surface and connections for damage.

Installation

Thread: Use PTFE tape or sealant, tighten evenly.Socket weld: Clean bevel, weld per standard, remove slag.

Flow Direction

Install per arrow: low inlet, high outlet.

Operation

Operate slowly and smoothly.Commission electric/pneumatic valves step by step.

Maintenance

Regularly check connections and packing. Retighten thread or repair weld if leakage occurs.

Restart

Check for smooth operation.Perform pressure test if needed before startup.