metals.wiki
Source a material中文

Reviewed technical and procurement guidance · 10 August 2026

SMP Silicone-Modified Polyester PPGL Coil

SMP Silicone-Modified Polyester PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a formulation-specific silicone-modified polyester system often selected for harder, weather-exposed building finishes; flexibility and weathering claims require test data for the exact product.

03Product variant

Specifications and dimensions

  • State whether thickness is base-metal or finished coated thickness, plus width, tolerances and edge condition.
  • State coil inside diameter, maximum outside diameter or mass, winding direction, camber and telescoping limits.
  • Define pretreatment, primer, top-coat and back-coat dry-film thickness, color, gloss, texture and protective film.

Standards and supply condition

  • ASTM A792/A792M-25a for the ordered 55% aluminum-zinc alloy-coated steel substrate
  • ASTM A755/A755M-18(2024) for applicable exterior building prepainted metallic-coated sheet
  • BS EN 10169:2022 for applicable continuously organic-coated steel flat products

Manufacturing and processing

  • The metallic-coated substrate is cleaned and pretreated before primer, finish coat and back coat are roll applied and oven cured.
  • The coated strip is cooled, inspected and recoiled, then may be slit, filmed or roll formed under controls that protect the coating.

Typical applications

  • Industrial and agricultural roofing
  • Wall cladding and prefabricated building panels
  • Roll-formed trim where bend performance has been qualified

Quality and acceptance controls

  • Verify substrate grade, heat or coil identity, metallic-coating designation and coating mass against the certificate.
  • Measure primer, top-coat and back-coat dry-film thickness using the agreed method and sampling plan.
  • Check color difference, gloss, texture, surface appearance and batch consistency against approved references.
  • Confirm adhesion, T-bend or flexibility, impact resistance and pencil hardness where required by the order.
  • Specify salt-spray, condensation, ultraviolet or chemical-resistance testing only with method, duration and acceptance criteria.
  • Inspect edge condition, winding, marking, protective film and moisture-resistant export packing.

Include in your RFQ

  • Substrate grade and governing metallic-coated steel standard
  • Metallic-coating type, designation and coating mass
  • Named organic coating system and supplier product where approval is required
  • Pretreatment, primer, top coat, back coat and each dry-film thickness
  • Color standard, color tolerance, gloss, texture and visual reference
  • Thickness basis, width, tolerances, coil geometry, edge and quantity
  • End use, exposure environment, corrosivity, ultraviolet level and design life
  • Forming profile, minimum bend, protective film and downstream process
  • Test methods, inspection documents, approved sample and warranty terms
  • Packing orientation, moisture protection, destination and delivery schedule

Selection limits

  • A resin-family label alone does not define formulation, pigment, primer, back coat, film build or verified performance.
  • No universal warranty or service life follows from PE, SMP, HDP or PVDF naming; use the named supplier system, exposure conditions and written warranty.
  • PPGI and PPGL are not automatic substitutes; cut edges, fasteners, condensation, alkaline contact and underside exposure require project review.
  • Color and gloss can vary with pigment, batch, film thickness, measurement geometry and weathering, so approval samples and tolerances must be explicit.

10 August 2026

Sources and technical review

01
ASTM A792/A792M 55% Aluminum-Zinc Alloy-Coated Steel Sheet

ASTM International · A792/A792M-25a; ordered edition controls

02
ASTM A755/A755M Prepainted Metallic-Coated Steel Sheet

ASTM International · A755/A755M-18(2024); ordered edition controls

03
BS EN 10169 Continuously Organic Coated Steel Flat Products

British Standards Institution · BS EN 10169:2022; ordered edition controls

04
Prepainted Metal and Coil Coating Technical Resources

European Coil Coating Association · Industry technical guidance

RFQ support

SMP Silicone-Modified Polyester PPGL Coil

SMP Silicone-Modified Polyester PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a formulation-specific silicone-modified polyester system often selected for harder, weather-exposed building finishes; flexibility and weathering claims require test data for the exact product.

Discuss sourcing from China