What is the recommended installation torque for a GE-BE screw connection, carbon steel, to ensure a 4:1 safety factor?

For a GE-BE screw connection, carbon steel (24Â° DIN 2353 socket with external metric thread and external BSP thread, sealing DIN 3852 type E), to achieve a 4:1 safety factor the recommended installation torque depends on thread size and series (LL, L, S). General recommended approach: - Use the nominal bolt/preload values for carbon steel DIN 2353 fittings and apply torque to reach a preload corresponding to 25% of the material proof load (to obtain 4:1 safety factor = proof load / working load = 4 â working load = 0.25Â·proof load). - Convert required preload to torque with T = K Â· F Â· d, where F = required preload, d = nominal thread diameter, K â 0.18 for galvanized carbon steel (lubrication state assumed typical; adjust K if lubrication differs). Example procedure (illustrative): 1. Find proof strength (Rp0.2 or proof load) for the thread size/material from DIN or manufacturer data. 2. Compute target preload F = 0.25 Â· proof load. 3. Compute torque T = 0.18 Â· F Â· d (d in meters â T in NÂ·m). 4. Use calibrated torque wrench; re-torque after short operation if recommended by manufacturer. Because DIN 2353/GE-BE published tables give exact proof loads by size and series, you should consult the specific DIN 2353 or manufacturer torque/preload tables for each thread diameter and series (LL, L, S) and then apply the above conversion. If you provide a specific thread size/series, I can calculate the exact recommended installation torque.

How should the GE-BE screw connection, carbon steel be inspected and maintained to retain a 4:1 safety factor?

Inspect GE-BE screw connection, carbon steel regularly to ensure 4:1 safety factor by following these steps: 1. Visual inspection: check for corrosion, damaged threads, stripped sealing faces, cracked or deformed components, and compromised galvanizing. Replace any parts with visible damage. 2. Torque and preload: verify assembly torque matches DIN 2353 recommended values for the specific series (LL, L, S) and thread size. Re-torque to spec after initial service and periodically to maintain required preload. 3. Seal integrity: inspect the elastomer gasket (DIN 3852 type E) for extrusion, hardening, cuts or deformation; replace seals at first sign of wear or each disassembly. 4. Thread condition: clean threads of debris and corrosion; apply appropriate anti-seize compatible with hydraulic systems if reassembly required; replace fittings with thread damage. 5. Leakage test: perform pressure/leak tests at working pressure and monitor for seepage; do not exceed working pressure limits that would reduce safety factor below 4:1. 6. Environmental control: protect from aggressive environments; maintain galvanizing and consider additional corrosion protection if needed. 7. Documentation: log inspections, torques, replacements, and pressure tests to ensure traceability and adherence to safety factor.

Which tightening sequence ensures a 4:1 safety factor for GE-BE screw connection, carbon steel?

For GE-BE screw connection, carbon steel (DIN 2353, 24Â° socket, sealing DIN 3852 type E) to achieve a 4:1 safety factor, follow this tightening sequence and procedure: 1. Preparation - Use appropriate series torque table for material and series (LL, L, S). Ensure threads and sealing face are clean, gasket correct and undamaged, and lubrication consistent with table (if specified). - Select bolt/stud and nut per DIN 2353 dimensions and material (carbon steel, galvanized). 2. Tightening sequence (multi-step, incremental) - Stage 1: Hand-tighten all nuts to seat the connection. - Stage 2: Turn each nut to 25% of final target torque (or preload) in sequence around the connection. - Stage 3: Increase each nut to 50% of final torque in same sequence. - Stage 4: Increase each nut to 75% of final torque. - Stage 5: Final torque: tighten each nut to 100% of the specified torque value for the chosen series (LL, L, S). 3. Torque/preload reference - Use the manufacturer or DIN-derived torque/preload values specific to GE-BE, carbon steel, and series (LL, L, S). The final torque must correspond to the preload that yields the required clamp load giving 4:1 safety factor against working pressure; verify with provided tables or engineering data for DIN 2353 GE-BE. 4. Verification - After final torque, recheck each nut in sequence to ensure torque retained. - If assembly is subject to pressure cycling, perform a retorque after initial pressure test per recommendations. Notes: - The multi-step, evenly incremented circular sequence prevents uneven gasket compression and achieves uniform preloadârequired to ensure the 4:1 safety factor. - Do not exceed specified torque for the selected series; overtightening can reduce safety margin. If you need the exact torque values for LL, L, S (carbon steel, galvanized) provide thread size and series and I will supply the specific torque/preload numbers.

GE-BE screw connection, carbon steel

Additional information

Material	CS – steel (cast iron)

DIN 2353 screw connection, type GE-BE: 24° DIN 2353 socket with external metric thread and external BSP thread (sealing DIN 3852 type E – elastomer gasket with rectangular cross-section). Safety factor 4:1. Available as: LL (very light series), L (light series), S (heavy series). Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HD-GE-04LL-BE-02	DIN 2353 connector GE 4LL 1/8" BSP	-	100	In stock	Enquiry
HD-GE-06L-BE-02	DIN 2353 fitting GE 6L 1/8" BSP	-	315	In stock	Enquiry
HD-GE-06L-BE-04	DIN 2353 fitting GE 6L 1/4" BSP	-	500	In stock	Enquiry
HD-GE-06L-BE-06	DIN 2353 fitting GE 6L 3/8" BSP	-	400	In stock	Enquiry
HD-GE-06LL-BE-02	DIN 2353 fitting GE 6LL 1/8" BSP	-	100	In stock	Enquiry
HD-GE-06S-BE-04	DIN 2353 connector GE 6S 1/4" BSP	-	630	In stock	Enquiry
HD-GE-08L-BE-02	DIN 2353 fitting GE 8L 1/8" BSP	-	500	In stock	Enquiry
HD-GE-08L-BE-04	DIN 2353 fitting GE 8L 1/4" BSP	-	315	In stock	Enquiry
HD-GE-08L-BE-06	DIN 2353 fitting GE 8L 3/8" BSP	-	400	In stock	Enquiry
HD-GE-08L-BE-08	DIN 2353 connector GE 8L 1/2" BSP	-	400	In stock	Enquiry
HD-GE-08LL-BE-02	DIN 2353 connector GE 8LL 1/8" BSP	-	100	In stock	Enquiry
HD-GE-08S-BE-04	DIN 2353 connector GE 8S 1/4" BSP	-	630	In stock	Enquiry
HD-GE-08S-BE-06	DIN 2353 connector GE 8S 3/8" BSP	-	800	In stock	Enquiry
HD-GE-10L-BE-02	DIN 2353 connector GE 10L 1/8" BSP	-	500	In stock	Enquiry
HD-GE-10L-BE-04	DIN 2353 connector GE 10L 1/4" BSP	-	315	In stock	Enquiry
HD-GE-10L-BE-06	DIN 2353 connector GE 10L 3/8" BSP	-	400	In stock	Enquiry
HD-GE-10L-BE-08	DIN 2353 fitting GE 10L 1/2" BSP	-	400	In stock	Enquiry
HD-GE-10S-BE-04	DIN 2353 connector GE 10S 1/4" BSP	-	800	In stock	Enquiry
HD-GE-10S-BE-06	DIN 2353 fitting GE 10S 3/8" BSP	-	630	In stock	Enquiry
HD-GE-10S-BE-08	DIN 2353 connector GE 10S 1/2" BSP	-	630	In stock	Enquiry
HD-GE-12L-BE-04	DIN 2353 fitting GE 12L 1/4" BSP	-	400	In stock	Enquiry
HD-GE-12L-BE-06	DIN 2353 fitting GE 12L 3/8" BSP	-	315	In stock	Enquiry
HD-GE-12L-BE-08	DIN 2353 fitting GE 12L 1/2" BSP	-	400	In stock	Enquiry
HD-GE-12S-BE-04	DIN 2353 fitting GE 12S 1/4" BSP	-	630	In stock	Enquiry
HD-GE-12S-BE-06	DIN 2353 fitting GE 12S 3/8" BSP	-	630	In stock	Enquiry
HD-GE-12S-BE-08	DIN 2353 connector GE 12S 1/2" BSP	-	630	In stock	Enquiry
HD-GE-14S-BE-06	DIN 2353 fitting GE 14S 3/8" BSP	-	630	In stock	Enquiry
HD-GE-14S-BE-08	DIN 2353 connector GE 14S 1/2" BSP	-	630	In stock	Enquiry
HD-GE-15L-BE-06	DIN 2353 fitting GE 15L 3/8" BSP	-	400	In stock	Enquiry
HD-GE-15L-BE-08	DIN 2353 fitting GE 15L 1/2" BSP	-	315	In stock	Enquiry
HD-GE-15L-BE-12	DIN 2353 connector GE 15L 3/4" BSP	-	250	In stock	Enquiry
HD-GE-16S-BE-06	DIN 2353 fitting GE 16S 3/8" BSP	-	630	In stock	Enquiry
HD-GE-16S-BE-08	DIN 2353 fitting GE 16S 1/2" BSP	-	400	In stock	Enquiry
HD-GE-16S-BE-12	DIN 2353 fitting GE 16S 3/4" BSP	-	420	In stock	Enquiry
HD-GE-18L-BE-08	DIN 2353 connector GE 18L 1/2" BSP	-	315	In stock	Enquiry
HD-GE-18L-BE-12	DIN 2353 connector GE 18L 3/4" BSP	-	250	In stock	Enquiry
HD-GE-20S-BE-08	DIN 2353 connector GE 20S 1/2" BSP	-	420	In stock	Enquiry
HD-GE-20S-BE-12	DIN 2353 fitting GE 20S 3/4" BSP	-	400	In stock	Enquiry
HD-GE-20S-BE-16	DIN 2353 connector GE 20S 1" BSP	-	420	In stock	Enquiry
HD-GE-22L-BE-08	DIN 2353 fitting GE 22L 1/2" BSP	-	250	In stock	Enquiry
HD-GE-22L-BE-12	DIN 2353 connector GE 22L 3/4" BSP	-	160	In stock	Enquiry
HD-GE-22L-BE-16	DIN 2353 connector GE 22L 1" BSP	-	250	In stock	Enquiry
HD-GE-25S-BE-12	DIN 2353 connector GE 25S 3/4" BSP	-	420	In stock	Enquiry
HD-GE-25S-BE-16	DIN 2353 fitting GE 25S 1" BSP	-	400	In stock	Enquiry
HD-GE-28L-BE-12	DIN 2353 connector GE 28L 3/4" BSP	-	250	In stock	Enquiry
HD-GE-28L-BE-16	DIN 2353 fitting GE 28L 1" BSP	-	160	In stock	Enquiry
HD-GE-30S-BE-16	DIN 2353 fitting GE 30S 1" BSP	-	420	In stock	Enquiry
HD-GE-30S-BE-20	DIN 2353 fitting GE 30S 1.1/4" BSP	-	400	In stock	Enquiry
HD-GE-35L-BE-16	DIN 2353 fitting GE 35L 1" BSP	-	250	In stock	Enquiry
HD-GE-35L-BE-20	DIN 2353 connector GE 35L 1.1/4" BSP	-	160	In stock	Enquiry
HD-GE-38S-BE-20	DIN 2353 fitting GE 38S 1.1/4" BSP	-	420	In stock	Enquiry
HD-GE-38S-BE-24	DIN 2353 fitting GE 38S 1.1/2" BSP	-	315	In stock	Enquiry
HD-GE-42L-BE-20	DIN 2353 connector GE 42L 1.1/4" BSP	-	250	In stock	Enquiry
HD-GE-42L-BE-24	DIN 2353 fitting GE 42L 1.1/2" BSP	-	160	In stock	Enquiry

Do you need a larger quantity of products or a bespoke quote?

Call us: +48 61 653 02 22 or email us: tubes@tubes-international.com

SEND ENQUIRY

DIN 2353 screw connection, type GE-BE: 24° DIN 2353 socket with external metric thread and external BSP thread (sealing DIN 3852 type E – elastomer gasket with rectangular cross-section). Safety factor 4:1. Available as: LL (very light series), L (light series), S (heavy series). Material: carbon steel, galvanized.