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THRU STUD / COVERED NUT

INCONEL 718, A453-660A-B
A193-B16, A437-B4B, SCM435, AISI 4140
DUREHETE 1055
COUPLINGSET

SNCM 439
BODY BOUND STUD / ROUND NUT

INCONEL 718, A453-660A,
A193-B16, A437-B4B,
AISI 4140
TAP STUD / SLOTTED NUT

SCM435, INCONEL 718, A453-660A-B,
A193-B16, A437-B4B, AISI4140,
DUREHETE 1055
STUD BOLT

INCONEL 718, INCONEL X-750, A453-660A,
A193-B16, A437-B4B,
A193-B7, A193-B8M
WASHER

A193-B7 / B8 / B8M,
A325, A320-L7, SS400,
UNS S32750 / S32760
HEXAGON BOLT & NUT

A193-B7 / B8M, 10.9, A325, A453-660,
INCONEL 718, INCONEL 625,
UNS S32750 / S32760,
MONEL K-400 / K-500
12PT BOLT & NUT

INCONEL 718, A453-660A-B,
A193-B16, A437-B4B,
A193-B7, A193-B8M
U-BOLT

A193-B7 / B8 / B8M,
A325, A320-L7, SS400,
UNS S32750 / S32760

TURBINE CASING BOLTS

Historically, Korea had to import steam and gas turbine bolting increasing costs and incurring long lead times.
Turbine housings are in 2 parts and bolted together using highly engineered fasteners.
In many applications these require to accommodate elevated temperatures and high pressures.
Typical fasteners used are THRU STUDS, TAP STUDS, COUPLING SETS AND DOWEL PINS.
These are applied to various turbine models by manufacturers like GE, SIEMENS, MITSUBISHI etc.

Introduction of products

THRU STUD

INCONEL 718, A453-660A-B,
A193-B16, A437-B4B, SCM435, AISI 4140,
DUREHETE 1055

COUPLING BOLT

SNCM 439

TAP STUD / SLOTTED NUT

SCM435, INCONEL 718,
A453-660A-B,
A193-B16, A437-B4B, AISI4140,
DUREHETE 1055

TURBINE CASING NUTS

TURBINE CASING NUTS used in conjunction with various studs in matching sizes with materials to customer specifications come in SLOTTED, COVERED AND ROUND configurations.

Introduction of products

BODY BOUND STUD / ROUND NUT

INCONEL 718, A453-660A,
A193-B16, A437-B4B,
AISI 4140

TAP STUD / SLOTTED NUT

SCM435, INCONEL 718,
A453-660A-B,
A193-B16, A437-B4B, AISI4140,
DUREHETE 1055

Rotor Bolt

ROTOR BOLTS are used to fasten the compressor disc to the rotating turbine and are subjected to elevated temperatures and exposed to high speed rotation.
This is one of the highest precision bolts amongst all turbine fasteners.

Introduction of products

ROTOR BOLT

Piping Bolt

HWASHIN BOLT also caters to a variety of other industries supplying:
PIPING AND GENERAL BOLTING for FPSO, SUBMARINES, F-LNG, JACK UP RIGS, DRILL SHIPS, SEMI-SUBMERSIBLES and other marine applications.
A considerable variety of products include, but are not limited to, STUD BOLTS, HEX BOLTS, U BOLTS, WASHERS, NUTS, etc.. These are widely used in heavy industries.

Introduction of products

STUD BOLT

A193-B7 / B7M , A320-L7 / L7M,
A453-660, A193-B8 / B8M / B8M CL2,
INCONEL 718, INCONEL 625,
UNS S32750 / S32760,
MONEL K-400 / K-500

WASHER

F436, F844, SUS304, SUS316, A453-660, UNS S32750 / S32760

HEX BOLT / NUT

A193-B7 / B16 / B8M, A437-B4B, A453-660, INCONEL 718, INCONEL 625, UNS S32750 / S32760, MONEL K-400 / K-500

U-BOLT

A193-B7 / B8 / B8M, A325, A320-L7, SS400 UNS S32750 / S32760

12 POINT SCREWS

12 POINT SCREWS have a similar threaded configuration but differ greatly at the head. They are used in higher loading applications by providing a larger contact area.

Introduction of products

12 POINT BOLT

INCONEL 718, A453-660A-B, A193-B16, A437-B4B, A193-B7, A193-B8M

STANDARD FASTENERS

STANDARD FASTENERS come in a very wide variety of materials made to National Classification Societies Standards such as: ASTM, ANSI, ASME, KS, BSI, EN, JIS, DIN, ISO,
SIEMENS, ETC.. Hwashin Bolt has a great knowledge of these standards allowing us to reach out and satisfy growing global markets.

Introduction of products

OEM SPECIAL FASTENERS

HWASHIN BOLT specializes in producing highly engineered products to meet customer specifications.
We continue to develop technologies and methods which survive changing times. As we develop, so must our investments in technology and people, our commitment to establish, maintain and grow as a world recognized company.

COATINGS, PLATING AND PAINT

COATINGS, PLATING AND PAINT are provided as specified. These allow for surface protection in various industrial environments. These can be electroplating, chemical application of polymers, paints, Teflon and Xylan. The latter two are fluoro resins, spray applied like paints then heated to specified temperatures
and times and finally fired to provide an inert hard coating. Working with our associate companies, we are constantly improving and developing technology in the coatings arena.

REVERSE ENGINEERING

Customers sometimes do not or cannot provide drawings, particularly for old or obsolete components for replacement.
By utilizing digitized shape information via 3D, shape measuring instrumentation and hand held devices, drawings can be developed and components manufactured.

EMERGENCY SERVICE and OVERHAUL

Preventive maintenance frequently requires companies to respond to their customers planned (sometimes unplanned) downtime to get repairs and maintenance effected and back to normal operation. We provide those services on site to customers needs/timing and have the personnel, equipment and knowledge to get them back up and running.