Specification safetron

Welded or seamless austenitic stainless steel tubes, depending on outer diameter (see dimensions).

• 1.4435/BN2/UNS S31603 (316L), ∂-Ferrite content of the basic material and longitudinal weld ≤ 0.5% for ISO dimensions app. also in circumferential welds.
• 1.4404/ UNS S31603 (316L)
• 1.4539/ UNS N08904 (904L)
• UNS S31603 (316L)

Stock dimensions:

• Imperial: 1/4” (6.35 x 0.89 mm) to 6” (152.40 x 2.77 mm)
• ISO: 13.50 x 1.60 mm to 219.10 x 2.60 mm
• Further dimensions on demand: metric: 6.00 x 1.00 mm to 154.00 x 2.60 mm

Tubes:
According to DIN 11865, ASTM A 269 / A 270 / DIN EN 10217-7 / DIN EN 10216-5
Length:
5900 - 6090 mm (max. 10% short lengths possible)
Fittings:

• Tube components: according to DIN11865, Prematerial acc. to ASTM A 269 / A 270 /DIN EN 10217-7 / DIN EN 10216-5
• Machined components: Prematerial according to ASTM A 479 / EN 10088-3 / DIN 17440

Tolerances:
According to ASTM A 269 / A 270 (pharmaceutical tubes) or DIN EN ISO 1127 / D4/T3
Ends:
Tubes and fittings are prepared for orbital welding

Tubes and Fittings:

inner surface:

• bright finish (bf) H4*: Ra ≤ 0.40 µm (16 μin)
• anodic clean (ac) H4*: Ra ≤ 0.40 µm (16 μin)
• electropolished (ep) HE5*: Ra ≤ 0.25 µm (10 μin)

outer surface: Ra ≤ 0.80 µm (32 μin)

Fittings:
a) Surface roughness of the cold worked area is not defined
b) Specified roughness of total surface available on request

• Tubes bf: Cleaning and test procedure ASTM A 632, S3
• Tubes ac: Anodic cleaning procedure Spec. HE 175 3VNS
• Tubes ep: Electropolishing procedure Spec. HE 175 4VN
• Fittings bf: Cleaning and test procedure  ASTM A 632, S3
• Fittings ac: Anodic cleaning procedure Spec. HE 111 3VNS
• Fittings ep: Electropolishing procedure Spec. HE 111 4VN

• Verification of basic test certificate
• Verification of dimensions
• Visual control
• Roughness measurements
• Endoscopic inspection of bright finished tubes

Tubes: permanently marked
Fittings: needle marking

• Heat number
• DOCKWEILER
• DW number
• Material
• Dimensions

Bright finished tubes and fittings closed with transparent PE caps (anodic clean and electropolished tubes and fittings with PE/PA squares), sleeved and sealed in PE and marked with a green sticker „safetron“. Electropolished tubes and fittings are closed with yellow PE caps and marked with a green sticker „safetron ep“.

Delivery of tubes in tubular container or wooden crate, fittings in strong cardboard box with shock-absorbing filler.