Construyendo confianza, asegurando el éxito Portal de clientes dang.victor@worldsteelgroup.com +84 902 881 833
World SteelBuilding trust, Assuring success

WS steel grating & floor plate · Trench & pit covers

WS drainage pit covers – GM

WS-GM grating covers and bedframes for drainage pits 300 × 400 to 700 × 700 mm in load classes T-2, T-14, T-20 and T-25 – supplied as matched, galvanised sets.

Estados UnidosAustralia / NZEuropa

Solicitar cotización Especificaciones

  • Pits 300 × 400 to 700 × 700 mm
  • Classes T-2, T-14, T-20 and T-25
  • Cover + angle bedframe as one set
  • Anchor lugs for casting in
  • Hot-dip galvanised

The system

Grating pit covers are used on catch basins, sediment traps, drainage wells and sink holes in roads, parks, plants and civil projects. Each WS-GM set is a grating cover and an angle bedframe with anchor lugs; the type code gives the pit size in decimetres and the cover height – WS-GM45-55 is a 400 × 500 mm pit with a 55 mm cover.

Plan and section of a drainage pit cover in its bedframe
WS-GM drainage pit cover and bedframe.

Class T-25

WS-GM, class T-25
Pit W × L (mm)TypeGrating b × a × h (mm)kgBedframe b × a × h (mm)AngleFrame kg
300 × 400WS-GM34-55305 × 500 × 5514.2335 × 520 × 60L60×57.6
400 × 400WS-GM44-55395 × 500 × 5518.3425 × 520 × 60L60×58.5
500 × 400WS-GM54-55485 × 500 × 5522.5515 × 520 × 60L60×59.3
300 × 500WS-GM35-65305 × 620 × 6522.8335 × 640 × 70L70×59.4
400 × 500WS-GM45-65395 × 620 × 6529.5425 × 640 × 70L70×510.4
500 × 500WS-GM55-65485 × 620 × 6536.2515 × 640 × 70L70×511.4
300 × 600WS-GM36-75305 × 740 × 7528.6335 × 760 × 80L80×511.5
400 × 600WS-GM46-75395 × 740 × 7536.4425 × 760 × 80L80×512.6
500 × 600WS-GM56-75485 × 740 × 7544.3515 × 760 × 80L80×513.7
500 × 700WS-GM57-75485 × 840 × 7549.9515 × 860 × 80L80×514.5
700 × 700WS-GM77-75695 × 840 × 7570.6725 × 860 × 80L80×517.1

Class T-20

WS-GM, class T-20
Pit W × L (mm)TypeGrating b × a × h (mm)kgBedframe b × a × h (mm)AngleFrame kg
300 × 400WS-GM34-50305 × 490 × 5012.8335 × 510 × 56L56×67.7
400 × 400WS-GM44-50395 × 490 × 5016.5425 × 510 × 56L56×68.6
500 × 400WS-GM54-50485 × 490 × 5020.3515 × 510 × 56L56×69.5
300 × 500WS-GM35-55305 × 600 × 5516.7335 × 620 × 60L60×58.2
400 × 500WS-GM45-55395 × 600 × 5521.7425 × 620 × 60L60×59.0
500 × 500WS-GM55-55485 × 600 × 5526.6515 × 620 × 60L60×59.8
300 × 600WS-GM36-65305 × 720 × 6526.2335 × 740 × 70L70×510.8
500 × 600WS-GM56-65485 × 720 × 6541.6515 × 740 × 70L70×513.1
600 × 600WS-GM66-65605 × 720 × 6551.9635 × 740 × 70L70×514.6
500 × 700WS-GM57-75485 × 840 × 7549.9515 × 860 × 80L80×514.5
700 × 700WS-GM77-75695 × 840 × 7568.0725 × 860 × 80L80×517.1

Class T-14

WS-GM, class T-14
Pit W × L (mm)TypeGrating b × a × h (mm)kgBedframe b × a × h (mm)AngleFrame kg
300 × 400WS-GM34-45305 × 480 × 4511.3335 × 500 × 50L50×56.5
400 × 400WS-GM44-45395 × 480 × 4514.7425 × 500 × 50L50×57.2
500 × 400WS-GM54-45485 × 480 × 4518.0515 × 500 × 50L50×57.8
300 × 500WS-GM35-50305 × 590 × 5015.1335 × 610 × 56L56×68.2
400 × 500WS-GM45-50395 × 590 × 5019.5425 × 610 × 56L56×69.2
500 × 500WS-GM55-50485 × 590 × 5024.0515 × 610 × 56L56×610.1
300 × 600WS-GM36-55305 × 700 × 5519.3335 × 720 × 60L60×58.7
400 × 600WS-GM46-55395 × 700 × 5525.0425 × 720 × 60L60×59.6
500 × 600WS-GM56-55485 × 700 × 5534.6515 × 720 × 60L60×510.4
600 × 600WS-GM66-55605 × 700 × 5538.2635 × 720 × 60L60×511.5
500 × 700WS-GM57-60485 × 810 × 6038.1515 × 830 × 65L65×512.7
700 × 700WS-GM77-60695 × 810 × 6054.6725 × 830 × 65L65×515.2

Class T-2

WS-GM, class T-2
Pit W × L (mm)TypeGrating b × a × h (mm)kgBedframe b × a × h (mm)AngleFrame kg
300 × 400WS-GM34-32305 × 454 × 327.9335 × 472 × 36L36×44.4
400 × 400WS-GM44-32395 × 454 × 3210.3425 × 472 × 36L36×44.8
500 × 400WS-GM54-32485 × 454 × 3212.6485 × 472 × 36L36×45.0
300 × 500WS-GM35-40305 × 570 × 4011.9335 × 590 × 45L45×55.9
400 × 500WS-GM45-40395 × 570 × 4015.4425 × 590 × 45L45×56.5
500 × 500WS-GM55-40485 × 570 × 4018.9515 × 590 × 45L45×57.2
300 × 600WS-GM36-40305 × 670 × 4013.8335 × 690 × 45L45×56.3
400 × 600WS-GM46-40395 × 670 × 4017.9425 × 690 × 45L45×56.9
500 × 600WS-GM56-40485 × 670 × 4021.9515 × 690 × 45L45×57.5
600 × 600WS-GM66-40605 × 670 × 4027.4635 × 690 × 45L45×58.3
500 × 700WS-GM57-45485 × 780 × 4528.2515 × 800 × 50L50×58.6
700 × 700WS-GM77-45695 × 780 × 4540.4725 × 800 × 50L50×510.2

Covers and bedframes are trial-fitted and supplied as matched sets. Other sizes, hinged and lockable covers are made to order.

Normas y requisitos por mercado

Códigos con los que World Steel diseña, fabrica y documenta este producto, y los principales requisitos geométricos y de carga en cada mercado.

Estados Unidos

  • AASHTOVehicle loading H-20 / HS-20, HL-93
  • ANSI/NAAMM MBG 532Heavy-Duty Metal Bar Grating Manual
  • ACI 318 Ch. 17Anchoring to concrete
  • AWS D1.1Structural welding code – steel
  • ASTM A123Hot-dip galvanized coatings
Road-trafficked covers
AASHTO H-20 / HS-20 or HL-93 commonly specified
Todas las normas de United States →

Australia / NZ

  • AS 3996-2019Access covers and grates
  • AS 5216Fastenings in concrete
  • AS/NZS 1554.1Structural steel welding
  • AS/NZS 4680Hot-dip galvanized coatings
Load class
Class A to G by location (AS 3996-2019)
Todas las normas de Australia & New Zealand →

Europa

  • EN 124Gully tops and manhole tops for vehicular and pedestrian areas
  • EN 1992-4Design of fastenings for use in concrete
  • EN ISO 1461Hot-dip galvanized coatings
Load class
A15, B125, C250, D400, E600 or F900 (EN 124)
Todas las normas de Europe →

Resumen solo orientativo: prevalecen la especificación del proyecto, la edición del código adoptada y la autoridad competente.

Acabados

AcabadoNormas / notas
Hot-dip galvanised (G)ASTM A123 · AS/NZS 4680 · EN ISO 1461
DuplexGalvanised + paint for colour or C5 environments

Preguntas frecuentes

How do I read a WS-GM code?

WS-GM45-55: pit 400 mm wide × 500 mm long (4 and 5 dm), cover 55 mm high. The class (T-2 to T-25) is stated with the order.

Are the frames included?

Yes – every cover is supplied with its matching angle bedframe and anchor lugs, trial-fitted in the shop.

Próximo proyecto

¿Planea una estructura metálica en el extranjero?

Envíenos sus planos o su modelo IFC – nuestro equipo de presupuestos responde con el alcance de fabricación, el plazo y el precio puesto en destino.