About JIAZHU

Jiazhu Construction - has been deeply engaged in the production of glued laminated timber since 2011, relocated from Shanghai to Rugao Port in 2018, and now has established two major production bases in Wuhan and Nantong.

Wooden Structure Building

We provide one-stop delivery of construction materials, as well as integrated design-production-construction services for long-span straight and curved glued laminated timber (glulam). We specialize in projects such as large-scale beam-and-column venues, villas, and wooden bridges.

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Home / Products / Glue Laminated Timber / Special Shaped Glulam / Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam
  • Douglas Fir Special Shaped Glulam

Douglas Fir Special Shaped Glulam

Product Description

Douglas Fir special-shaped glulam is a custom-engineered wood product formed by laminating layers of Douglas Fir and shaping them into complex, non-standard geometries. Known for its exceptional strength, dimensional stability, and rich reddish tones, it’s ideal for bold architectural designs and demanding structural applications.

Key Characteristics

Key Characteristics
•Species: Douglas Fir
•Density: 530–560 kg/m³ — strong and resilient
•Appearance: Warm red and yellow hues with fine grain
•Workability: Excellent for machining, shaping, and bondingforms
•Durability: Moderately durable; heartwood resists decay
•Sustainability: Sourced from responsibly managed forests

Common Applications

Common Applications
•Arches, tapered beams, and elliptical forms
•Bridges, canopies, and curved roof structures
•Custom trusses and sculptural timber elements
•Exposed architectural features in public and commercial buildings

Additional Instruction

Douglas Fir special-shaped glulam offers a rare combination of engineering precision, natural beauty, and design flexibility, making it a top choice for mass timber projects that push creative boundaries.

Product Parameters
Uses Unique architectural forms,Custom structural components,Complex geometries in modern buildings
Surfaces S4S
Dimensions •Widths:up to 1300mm
•Heights: up to 600mm
•Lengths: up to 28m
•available on request: block glued glulam, glulam with large finger joints and special shapes requiring CNC machining
Bonding Adhesive based on  polyurethane(PU), approved for bonding loadbearing and non-loadbearing timber components, both indoors and outdoors
Moisture content 12%±2.5%
Strength classes • GL24c
• GL24h
• GL28c
• GL28h
• GL30c
• GL30h
• GL32 (on request)
About Us
Nantong Wellhouse Architectural Technology Co., Ltd.

Nantong Wellhouse Architectural Technology Co., Ltd. was established under the guidance of green building and sustainable development concepts, specializing in the research, development, and production of glued laminated timber (glulam) and timber structure products. The factory is characterized by a high degree of mechanization and standardization, creating an efficient and intelligent production environment. 

Relying on a mature production system and professional team, the company boasts a monthly production capacity of up to 2,000 cubic meters. Its core products include glued laminated timber (glulam), solid wood wall panels, and Cross-Laminated Timber (CLT), which are widely used in the field of timber structure construction.

The company provides full-cycle, integrated services encompassing architectural design, budget estimation, production, manufacturing, and construction installation. It covers diverse project types such as large-scale venues, villas, and timber bridges, ensuring efficient project progression through professional technical coordination and full-course construction support.

Certificate Of Honor
  • Quality Management System Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
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