Horticultural greenhouse tunnels comprising prefabricated steel frame components, advanced technology, and polyethene covers, that are presented complete and ready for assembly on site.
The greenhouse tunnel environment promotes optimum horticultural growing conditions for a variety of crops and climates to promote earliness and increase yield, and they are built to enable tractors and personnel to work inside.
The steel structural frame includes arched steel tubes to form tunnel shared profile, supported by fabricated steel legs/anchors self-drilled directly into the ground. The steel frame is strengthened with extra steel bracing and anchoring held together with specialised clamps and other small components, and it is covered with high-tech agricultural polyethylene over its entire length and width and up to the height of the structural steel leg, thus forming a greenhouse environment. The Polyethylene will have a variety of optical and thermal properties and is secured to the steel tube arches with metal clits and a UV-protected rote system.
The greenhouse tunnel systems are predominantly multi-span, and individual blocks can cover any area according to local topography. This is achieved with customised lengths and profiles of steel tubes along with modular designs throughout the greenhouse tunnel ranges.
To further improve the growing environment, the greenhouse tunnel ranges can also include other technologies such as: -
Door frames at either end of the tunnel with a woven plastic covering to seal the tunnel ends whilst enabling easy access for personnel or machinery using a manual or automated roller door system.
Venting Systems enable air to circulate whereby the Polyethylene Cover is lifted manually or electrically.
Steel-Formed Rain Gutter runs the length of the tunnel to collect and recycle rainwater.
Woven Plastic Side Skirts to also protect the perimeter of the tunnels and maintain a greenhouse environment.
In summary the materials are: -
Galvanised steel tube, fabricated steel legs/ground anchors, press formed sheet steel components, rolls of blown multi-layer polyethylene cover material, plastic woven door and side skirt material, roll-formed or coils of flat steel gutter, poly-steel rote, high tensile wire, wire rote, minor plastic components, electrical motors, gearboxes, and transmission shafts.
The Hanging substrate, double skin technologies, total vent greenhouse and integrated crop system are built within the greenhouse tunnel and are attached to the support beams and structure of the tunnel, this functions as within the complete greenhouse tunnel.
All materials are prefabricated and customised to be assembled on site according to the required specification. The additional items are for construction purposes only, therefore not forming part of the finished greenhouse tunnel, such as: -
Rote clamp tensioning tool, bull ring, drilling adaptors, venting and cladding tool, and miscellaneous tools as required.
The packaging and construction for shipping purposes, and the packaged greenhouse tunnels comprise: -
Bundles of straight steel tube stillages and pallets of fabricated legs, anchors and struts, palletised polyethylene rolls, palletised and boxed small components and tools, coils or bundles of formed rain-water gutter lengths - palletised coiled rote and high tensile wire.
On arrival at the destination site, an assembly and construction process takes place which includes machine forming of the straight steel tube lengths into the desired arched profile and an option to form steel rainwater gutter shapes from coil. Transport requirements are typically one or more full trailer load/full container load.
Keywords
GREENHOUSES
OF STEEL
POLYCARBONATES
OF IRON
PLASTICS
GALVANIZED
FRAMES
Justification
Classification has been determined in accordance with the following:
For the purposes of determining the commodity codes within which goods most appropriately fall, reg 3 (1) of The Customs Tariff (Establishment) (EU Exit) Regulations 2020 sets out that the rules of interpretation contained in the following have effect – a. Part Two (Goods Classification Table Rules of Interpretation) of the Tariff of the United Kingdom (Reg 3(1)(a)); and b. Notes to a section or chapter of the Goods Classification Table (Reg 3(1)(b)).
General Interpretative Rules (GIRS):
GIR 1 - Has been used to classify this product by the terms of heading - 9406 Prefabricated buildings
GIR 6 - Has been used to classify the goods to subheading level - 940690 Other than of wood; Other than modular buildings, of steel
8 Digit code - 94069038 - Of iron or steel; Other than greenhouses
Also Classified in Accordance with :-
Harmonized Standard Explanatory Notes (HSENs) to 94.06