STAUFF Weld Plate for Single Clamps (Type SPAL – Heavy Series)

Description

Compliance and Reference Standards

The STAUFF Weld Plate for Single Clamps (Type SPAL – Heavy Series) is a fundamental component developed in accordance with DIN 3015, Part 2 (Heavy Series). The use of the Heavy Series ensures the absorption of mechanical shocks and the secure fastening of rigid pipes within hydraulic circuits. SPAL plates cover the full dimensional range required for these applications, supporting STAUFF Groups 3S to 12S, which correspond respectively to DIN Groups 1 to 10.

Construction Features and Dimensions

The construction dimensions of the STAUFF Weld Plate for Single Clamps (Type SPAL – Heavy Series) increase progressively to accommodate the loads associated with the different clamp groups. For more compact systems, such as STAUFF Group 3S (DIN 1), the plate has a total length (L1) of 74 mm, a hole centre distance (L2) of 33 mm and a width (B) of 30 mm. As the dimensions and loads increase, the configuration changes accordingly: for example, Group 6S (DIN 4) reaches an L1 length of 140 mm and an L2 centre distance of 90 mm, with the B width increased to 45 mm. For extremely large pipe sizes, Group 12S (DIN 10) ensures excellent stability with an L1 length of 680 mm, an L2 distance of 534 mm and a substantial B width of 180 mm. The plate thickness (S) and boss height (H) also increase proportionally, with the thickness ranging from 8 mm for Group 3S to 30 mm for Groups 11S and 12S.

Coding and Thread Options (G)

Installation flexibility is ensured by the two thread options identified within the product code. The plates are supplied in the “M” version with ISO metric threads, ranging from M10 for Groups 3S, 4S and 5S up to M30 for Groups 10S, 11S and 12S. Alternatively, the “U” version is available with Unified Coarse (UNC) threads, ranging from 3/8-16 UNC up to 1-1/4-7 UNC. The base diameter of the cylindrical boss (D1) likewise varies from 18 mm to 50 mm.

Materials and Surface Finishes

The service life and corrosion resistance of the STAUFF Weld Plate for Single Clamps (Type SPAL – Heavy Series) depend on selecting the appropriate material for the operating environment. The coded catalogue options include uncoated carbon steel (W1) and phosphated carbon steel (W2), typically used as standard configurations depending on the size group. Zinc/nickel-plated carbon steel (W3) is available for more aggressive environments. Extreme applications are covered by the stainless steel versions, available in V2A grade 1.4301 / 1.4305 (AISI 304 / 303), coded W4, and V4A grade 1.4401 / 1.4571 (AISI 316 / 316 Ti), coded W5.

Summary Technical Table of the Main Features of the STAUFF Weld Plate for Single Clamps (Type SPAL – Heavy Series)

Product Codes