About Seewaylok
Precision built.
Partnership driven.
Seewaylok and GOOLOK operate as part of the same company, focused on the design, manufacturing and supply of precision tube fittings, instrumentation valves, pressure-control products and fluid-system components for demanding industrial applications.
More than a product supplier.
A manufacturing partner.
Seewaylok serves OEM manufacturers, EPC contractors, system integrators, industrial distributors, skid builders and engineering companies that need dependable fluid-system components, technical support and stable long-term supply.
Our portfolio covers tube fittings, instrumentation valves, pressure regulators, filters, quick connects, hose and tubing products, along with drawing-based customized components.
Seewaylok and GOOLOK are business identities within the same company. The shared focus is precision fluid-system engineering, manufacturing capability, product consistency and responsive industrial supply.
Built through
industrial experience.
The business has developed through long-term experience in fluid-system components, international supply, manufacturing and technical support.
Business Foundation
GOOLOK's business history dates back to 2002, with an early focus on fluid-system products and industrial supply.
China Service Expansion
Service organizations were established in Shenzhen and Xiamen to strengthen technical support and local responsiveness.
Integrated China Operations
Domestic operations in Zhejiang expanded warehousing, logistics and equipment-production support.
Manufacturing + Global Supply
Seewaylok / GOOLOK continues to support international industrial buyers with manufacturing, engineering and supply capability.
Built by
manufacturing.
Production capability combines CNC machining, skilled operators, controlled processes, flexible scheduling and support for both standard and drawing-based products.
Precision machining capacity for repeat and customized production.
Skilled workforce supporting machining, inspection, assembly and packing.
Support for drawings, specifications, private label and packaging.
Support for both small-batch requirements and larger-volume programs.
Technical support
beyond the catalog.
Our role is not limited to selling parts. We support customers in selecting, reviewing and adapting components for specific fluid-system requirements.
Product Selection
Support for choosing appropriate valve, fitting, regulator and connection configurations.
Material Review
Review of stainless steel and selected alloy options for customer applications.
Drawing-Based Customization
Manufacturing support based on customer drawings, dimensions and technical specifications.
System Compatibility
Technical review focused on connections, dimensions and fluid-system compatibility.
It is a process.
Control machining, dimensions and process conditions to support consistent production from batch to batch.
Apply product-specific inspection and testing to verify performance before shipment.
Maintain inspection records and product traceability through defined quality-control stages.
Four stages.
One quality logic.
Quality control follows a structured IQC–IPQC–FQC–OQC workflow, moving from incoming materials through production, finished-product verification and shipment release.
Incoming Quality Control
Material identification, hardness checks and incoming dimensional verification.
In-Process Quality Control
Dimensional, thread and geometry inspection during production.
Final Quality Control
Finished-product visual, dimensional and applicable functional testing.
Outgoing Quality Control
Final documentation, packing and shipment-release verification.
Measure.
Verify. Record.
Testing capability covers key stages from raw-material verification to finished-product pressure and leak performance, with equipment selected according to the product and inspection requirement.
Material Verification
Handheld spectrometer and hardness testing for incoming material verification.
Dimensional Inspection
Optical measurement systems and precision calipers for geometry and dimensions.
Surface Inspection
Microscopic and surface-roughness inspection for finished components.
Leak Testing
Helium mass-spectrometer leak testing for applicable products and requirements.
Pressure Testing
Pneumatic and hydrostatic pressure-testing capability for applicable products.
Burst Testing
Burst testing to evaluate pressure capability and product integrity where required.
Systems backed
by qualification.
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Quality management system certification.
Environmental management system certification.
Occupational health and safety management system certification.
Material, sealing and leakage test documentation where applicable.
Experience across
critical industries.
Our product portfolio supports industrial fluid-control, instrumentation and high-purity applications across multiple sectors.
High-purity gas and fluid delivery applications.
↗ 02Oil & GasInstrumentation, sampling and process systems.
↗ 03Petrochemical & ChemicalProcess fluid control, isolation and regulation.
↗ 04Industrial GasGas distribution, pressure control and delivery systems.
↗ 05Power GenerationSampling, monitoring and instrumentation systems.
↗ 06Research & LaboratoryPrecision gas and fluid-control applications.
↗Build a reliable supply partnership
From requirement
to reliable supply.
Tell us what you need—standard products, OEM supply, drawing-based components or technical support. We can review your requirement and discuss the right next step.