U, C and hollow block forms with the rail and post interfaces kept together
Steel offset blocks connect a specified guardrail profile to its post at the required stand-off. Our range includes U-section, C-section and hollow formed blocks in the published 3–8 mm thickness band, with custom lengths and attachment patterns. Each block follows its component drawing and accepted barrier configuration.
| Block form | U, C, hexagonal hollow or the specified formed section |
|---|---|
| Material | Selected Q235/Q345 callout or accepted project material |
| Thickness | Published 3–8 mm band; actual thickness retained with the part drawing |
| Offset and length | Post-to-rail stand-off and finished block dimensions |
| Holes and slots | Pattern, orientation and mounting faces matched to rail and post |
| Finish | Hot-dip galvanized or specified coating route |
| Hardware | Post/rail fasteners and any required backing parts listed separately |
Our dedicated steel-block catalog lists a 3–8 mm thickness band. Section, length, offset and attachment dimensions follow the selected rail/post assembly.
| Parameter | Published value | Order detail retained |
|---|---|---|
| Steel thickness, lower catalog limit | 3 mm | Selected component thickness |
| Steel thickness, upper catalog limit | 8 mm | Selected component thickness |
| Finished block length | Custom drawing | Length and datum |
| Rail-to-post offset | Custom drawing | Reference mounting planes |
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The first-party steel-block catalog lists 3–8 mm thickness. The quoted component drawing identifies the supplied form, material, actual thickness, length, rail-to-post offset and attachment pattern as one selected configuration.
Open-section blocks have their own flange, web and mounting-face details. The released orientation locates the rail and post contact faces for the selected connection.
A hollow hexagonal or other closed form retains its bend and contact geometry. Plate thickness, end faces and attachment positions are specified on that form’s component drawing.
The accepted barrier configuration identifies its rail, post, steel block, backing parts and hardware. Required crash-test or agency records apply to that complete arrangement, while our offer identifies the supplied block component.
The drawing states overall block depth and installed rail-to-post offset as separate dimensions where applicable. Contact planes, nested profiles and backing parts define the finished connection stack.
Round holes, slots and end offsets follow the rail/post detail. Opposite-hand or different-height blocks retain separate marks so their attachment pattern remains identifiable after coating.
Bends and cut edges remain part of the finished section. The selected coating specification covers the block form, drainage and accessible contact surfaces, with its protection requirements recorded alongside the finish appearance.
Blocks are counted against the selected post and rail arrangement. Double-sided runs, transitions and other special details keep their own quantities and component marks.
The replacement request identifies the retained rail profile, post and approved block detail. Photographs help show the form, while measurements and drawings establish the hidden contact and hole geometry.
Finished dimensions, contact planes, bends and hole positions are measured from the block drawing. A flat mounting face and a correct hole pattern are both needed for the intended connection.
Thickness and coverage checks follow the selected protection specification and component category. Zinc at holes and contact faces is included in the finish inspection; barrier crash-test records retain their separate system scope.
Block marks retain form, revision and finish identity. Fasteners and backing pieces keep their own material and dimensional requirements on the receiving list.
We quote the selected block form, dimensions, finish and quantities, with fasteners or backing parts itemized. Different offsets or attachment patterns remain separate items even when the steel thickness matches.
Packing follows the block geometry and finish. Suitable nested groups or dividers protect contact faces and projecting flanges; boxed bolts have their own counted packing group.
Packing groups connect each block mark to its post and rail schedule. Installation quantities, spare blocks and loose hardware have separate counts for receiving.
The changed offset is accepted as part of the barrier configuration and its connections. The component drawing then records the required depth, contact planes, hole pattern and permitted block form.
The selected barrier detail and purchasing authority govern acceptance of the material, geometry and complete barrier response. A proposed steel, timber or composite alternative is identified for that system review.
It is the published catalog thickness envelope. The quotation identifies the actual form, material and thickness combination, with the remaining dimensions fixed by the selected component drawing.
They serve different joints and can have different head forms, lengths and fastening arrangements. The hardware schedule identifies the required bolt for each rail, block and post connection.
A double-faced order follows the accepted two-sided component and attachment detail. Post holes, fastener stack and block orientation are checked for that assembly.
Our offer identifies the steel component and required supply records. Crash-test and agency acceptance records address the specified complete barrier configuration, including the actual rail, post, block and hardware.
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Send the block and rail/post detail with form, thickness, offset, hole pattern, finish, quantities and destination. Include the accepted barrier reference and source requirements for an itemized block-and-hardware offer.