MORE THAN STANDARD:
TUBES AND FITTINGS FROM THE QUALITY LEADER.

For the highest requirements for surfaces, purity and corrosion resistance in high-tech industries

Our tubes and fittings meet the highest demands for surface quality and purity - whether in the semiconductor industry, in the pharmaceutical industry, in analytics or in other high-tech industries.

For the safe transport of explosive, toxic and corrosive media, we offer a safe solution with the COAX double-wall tube system. COAX consists of an internal process tube and an external safety tube.

Advantages

Advantages of Dockweiler tubes and fittings at a glance:

All current dimension series and materials in stock
Certified according to all current national and international norms and standards
Special materials available
High-quality surface treatment processes guarantee a perfect inner surface
Optimum preparation of all tube and fitting ends for orbital welding
High corrosion resistance due to high-quality alloys from qualified suppliers
ASME BPE certified manufacturer of tubes and fittings (BPE-105, BPE-169)
Planning and process reliability through comprehensive and documented quality assurance
Cleaning and packaging, even under cleanroom conditions
Immediate availability thanks to international warehouses and modern logistics
Everything from a single source

NEW: Electropolished Coil Tube

Seamless gas supply manufactured in highest purity for UHP applications in the microelectronics industry. Highest Dockweiler quality due to electropolished inner surface with Ra ≤ 0.25 µm with complete traceability.

Reduction of welds reduces the risk of possible contamination as well as the effort for weld inspection, thus increasing the efficiency of the installation.

More information and benefits: EP Coil Tube [PDF]

Data & Facts

Quality	Inner Surface Roughness	Finish
	up to Ra ≤ 0.13 µm (5 µin)	electropolished
	up to Ra ≤ 0.40 µm (16 µin)	bright finished
	Non-defined on request Ra ≤ 0.80 µm (32 µin)	bright finished, anodically cleaned
	up to Ra ≤ 0.25 µm (10 µin)	bright finished, electropolished
	up to Ra ≤ 0.60 µm (24 µin)	bright finished, electropolished
	up to Ra max. ≤ 0.38 µm (15 µin)	Mechanical polished, electropolished
	Non-defined Outer Surface: Ra ≤ 1.00 µm (40 µin)	bright finished

Products	Materials	Dimensions
Tubes Coil Tubes Elbows T-Pieces Reducers Endcaps Ferrules	1.4404 1.4435 1.4539 1.4307 UNS S31603 (316L) UNS S30403 (304L) UNS N08904 (904L) 2.4602 / UNS N06022 (C-22) AL-6XN / UNS N08367	Imperial according to ASTM A269 / A270 and DIN 11866 series C from 1/8" to 6" Pipe according to ASTM A312 / A999 from 168.28 mm to 508.00 mm (NPS 8 to NPS 20) Schedule 10S ISO according to DIN EN ISO 1127 and DIN 11866 series B from 13.50 mm to 219.10 mm (DN 8 to DN 200) Metric according to DIN 11866 series A from 3.00 mm to 154.00 mm

Products

Materials

Dimensions

Tubes

Coil Tubes

Elbows

T-Pieces

Reducers

Endcaps

Ferrules

1.4404

1.4435