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 Technical Information / 技術資訊

Material

 

All single DRSTRUT Channel members are accurately and carefully rolled from strip steel to BS6946:1988 specification

 

Material Thickness

 

The thicknesses of the various channels are as follows:
DR41 - 2.5mm
DR141 - 1.5mm
DR21 - 2.5mm
DR121 - 1.5mm
DR62 - 2.5mm
Engineering properties may vary slightly due to commercial tolerances.

 

Framing Members

Channels and continuous inserts are accurately and carefully cold formed to size from low carbon strip steel. The channel has a continuous slot with inturned edges. Secure attachments may be made to the framing member with the use of hardened, toothed, grooved nuts which engage the inturned edges.

Masses and Dimensions

Masses given for all material are approximate shipping weights. All dimensions subject to commercial tolerance variations.

 

Standard Lengths

Standard lengths of the above channels are 6m. Facilities are available to cut standard lengths into any special lengths for a small cutting charge.

 

Section Shape

The roll forming process used by DRSTRUT produces a consistent channel within the manufacturing tolerances allowed. The process induces stresses within the section itself which are released when the 

channel is cut. This creates a common condition known as “Bellmouth” where the section deforms slightly for a small distance in from the end.

 

Fittings

The fittings, unless noted otherwise, are punch press formed from low carbon steel plates or strip.

 

Channel Nuts

The nuts are produced from steel bars and after all manufacturing operations are completed, zinc plated nuts are case hardened. They are rectangular with the ends so shaped as to permit a quarter turn crosswise in the framing member after inserting through the slotted opening in the channel and to prevent any further turning of the nut. Two serrated grooves in the top of the nut engage the inturned edges of the channel and, after bolting operations are completed, will prevent any longitudinal movement of the bolt and nut within the framing member. All bolts and nuts have ISO metric coarse screw threads.

All channels are available in Plain, Hot Dipped Galvanised, Galvabond, Zinc Plated and Polyester finishes. Most single channels are also available in stainless steel.

 

Plain

 Plain finish on DSRTRUT channel is an oiled finish that is applied to the raw material by the steel mill. The cold rolling process used to form DRSTRUT channel removes the excess of this oil and the residue provides a modicum of protection for the channel in storage. The plain finish on DRSTRUT fittings is that of the commercial bar stock input material. No surface treatment is applied to plain finish fittings.

 

Galvabond Channel

Input material is supplied by the steel mill generally in accordance with AS 1397 having a coating class of Z275. The material is slit to width and roll formed to shape.

 

Hot Dipped Galvanised

Coatings are applied generally in accordance with BSEN 1461. The thickness of the coating is dependent on the material thickness of the component being galvanised. It should be noted that due to the galvanising process, the thickness of thecoating will vary over the surface and should be taken into account during component assembly. It may be necessary to remove excess buiId-up prior to use.

 

Stainless Steel

Unistrut stainless steel channel is manufactured from Grade 316 stainless steel. The material is slit to width and roll formed to shape. Grade 316 stainless steel has excellent corrosion resistance and has advantages over grade 304 stainless steel, such as:

 

  •                         Resistance to pitting and crevice corrosion in chloride environments.
  •                    Superior resistance to ordinary rusting in most applications.
  •                    Regularly used in aggressive coastal and marine environments.
  •                    Highly recommended for food processing environments where it can be easily cleaned and
  •                    has a greater resistance to organic and inorganic chemical substances.

 

Polyester Coated

Channel and parts are carefully cleaned and phosphated. Immediately after phosphating, a uniform coat of thermosetting polyester powder is electrostatically applied then baked. Minimum coating thickness to exterior surfaces is 50 microns. The polyester coating is ultra-violet stabilised.

 

Zinc Plated

Channel, fittings and components are electroplated generally in accordance with AS 1789 Service Condition 2.

 

Fasteners are electroplated generally in accordance with AS 1897 Service Condition 1.

 

Specific Coating

When specific applications require other commercially available finishes, they can be supplied according to specification.

 

 

材料

 

所有DRSTRUT配件均根據BS6946:1988規範 製造

 

 

 

材料厚度

 各種槽鋼的厚度如下:

DR41 - 2.5mm

DR141 - 1.5mm

DR21 - 2.5mm

DR121 - 1.5mm

DR62 - 2.5mm

 

 

鋼架

槽鋼和預埋槽均為成型為低碳鋼帶鋼。槽鋼具有連續孔有內翻邊的槽。可以使用硬化的,有齒的,帶凹槽的螺母對嚙合構件構成固定的附件,這些螺母與內側邊緣接合。

 

質量和尺寸

所有材料的質量是大概的運輸重量。所有尺寸都有商業誤差變化。

 

 

標準長度

上述槽鋼的標準長度為6m。設備可以將標準長度切割成任何特殊長度,以減少切割費用。

 

 

截面形狀

 DRSTRUT使用的輥軋成型工藝在允許的製造公差範圍內產生一致的槽鋼。該過程引起部分本身內的應力,這些應力在該部分本身釋放

 槽鋼被切斷。這創建了一個稱為“Bellmouth”的常見條件,其中部分從末端稍微變小一點距離。

 

 

 

配件

 除非另有說明,配件是由低碳鋼板或鋼帶形成的沖壓機製造。

 

 

彈簧螺母

 螺母由鋼筋生產,所有製造操作完成後,鍍鋅螺母表面硬化。它們是矩形的。螺母頂部的兩個鋸齒形槽與通道的折邊邊緣接合,螺栓操作完成後,將阻止螺栓和螺母在槽鋼內的任何縱向移動。所有螺栓和螺母均具有ISO公制粗螺紋。

 所有槽鋼都有熱鍍鋅,鍍鋅,鍍鋅和滌綸飾面。大多數單通道也可提供不銹鋼。

 

 

熱鍍鋅

 根據BSEN 1461施加。塗層的厚度取決於被鍍鋅的部件的材料厚度。應當注意,由於鍍鋅工藝,塗層的厚度將在表面上變化,並且在部件組裝期間應該被考慮。使用前可能需要清除多餘的物料。

 

 

不銹鋼

 DRSTRUT 不銹鋼槽鋼由316不銹鋼製成。材料被切割成寬度並且成形為成形。 316級不銹鋼具有優異的耐腐蝕性,優於304級不銹鋼,如:

                      耐氯化物環境中的點蝕和縫隙腐蝕。

                    在大多數應用中具有優異的耐普通生鏽性能。

                    經常用於沿海和海洋侵蝕的環境。

                    強烈推薦用於易於清潔的食品加工環境

                    對有機和無機化學物質的抵抗力更強。

 

 

鍍鋅

 h通道,配件和組件通常按照AS 1789服務條件2進行電鍍。

 緊固件一般按照AS 1897服務條件1進行電鍍。

 

 

特殊塗層

 當具體應用需要其他市售的表面處理時,可根據規格提供。