Is Straight fitting G, carbon steel suitable for high-pressure hydraulic systems and which series (LL, L, S) is recommended?

Yes . Straight fitting G, carbon steel Format (socket 24Â° DIN 2353, external metric thread both sides) can be used in highâpressure hydraulic systems, provided the correct series is selected for the system pressure and application. The three series indicate wall thickness and pressure capability: - LL (very light series): lowest material thickness and lowest pressure rating . suitable only for lowâpressure or lightweight applications, not recommended for highâpressure hydraulics. - L (light series): medium strength for moderate pressures; may be acceptable for some mediumâpressure hydraulic circuits but verify the specific pressure rating for the fitting size and application. - S (heavy series): highest wall thickness and highest pressure rating . recommended for highâpressure hydraulic systems; offers the greatest safety margin and durability. Because actual allowable working pressures depend on thread size, fitting size, and system conditions, always consult the DIN 2353 pressure ratings or manufacturer datasheets for the exact series and size, and follow applicable standards and safety factors. For highâpressure hydraulics choose the S (heavy) series unless calculations or manufacturer confirmation show L is sufficient.

Does Straight fitting G, carbon steel have different torque specifications for LL, L, and S series when tightening external metric threads?

Yes. Straight fitting G, carbon steel (DIN 2353) has different tightening torque ranges for LL, L and S series when used with external metric threads. The three series differ in thread form and wall thickness, so recommended assembly torque increases from LL (very light) to L (light) to S (heavy). For safe and leakâfree joints follow the torque values or installation instructions provided by the manufacturer or DIN 2353 tables specific to each series; do not apply a single torque for all three. If exact numeric torques are required, consult the DIN 2353 torque table or the fitting supplierâs datasheet for the specific thread size and series.

What are the corrosion resistance limits of Straight fitting G, carbon steel (galvanized) in outdoor environments?

Straight fitting G, carbon steel (galvanized) offers basic corrosion protection suitable for many outdoor applications, but has clear limits: - Coating type and thickness: Standard galvanizing provides moderate sacrificial protection against corrosion. Performance depends on zinc coating quality; thin or uneven coatings will corrode faster, especially at edges, threads and cut surfaces. - Atmospheric environments: Acceptable in rural and suburban atmospheres with low to moderate pollution. In urban, industrial or coastal (marine) atmospheres with elevated SO2, chlorides or humidity, galvanized carbon steel will corrode significantly faster and its lifetime is reduced. - Exposure conditions: Continuous wetting, salt spray, condensation, splash or pooling of water accelerate zinc depletion and undercutting at fittings and threads. Frequent wetâdry cycles (coastal environments) are particularly aggressive. - Mechanical wear and abrasion: Threads and sealing surfaces on Straight fitting G, carbon steel are vulnerable where galvanizing is damaged during installation, reducing corrosion resistance locally and risking galvanic or crevice corrosion. - Temperature limits: Galvanized coatings perform up to moderate temperatures; at sustained high temperatures (>200â250Â°C) the zinc layer deteriorates. For typical outdoor temperatures this is not an issue. - Service life expectations: In mild outdoor conditions (rural/suburban, low chloride) life can be years to decades. In aggressive industrial or coastal environments, protective life may be months to a few years without additional protection. Recommendations to extend life: - Use additional protective measures (paints, sealants, washers) and ensure proper thread protection during installation. - Consider alternative materials/coatings (stainless steel, duplex, hot-dip galvanizing with thicker zinc, or specialized corrosion-resistant coatings) for coastal, industrial or high-humidity sites. - Inspect regularly and replace fittings where zinc loss, pitting or corrosion products appear. Summary: Straight fitting G, carbon steel (galvanized) is suitable for outdoor use in low-to-moderate exposure but is limited in aggressive, coastal or industrial atmospheres, in areas of mechanical damage, and under conditions of continuous wetting or salt exposure.

Straight fitting G, carbon steel

Additional information

Material	CS – steel (cast iron)

DIN 2353 straight fitting, type G: socket 24° DIN 2353, with external metric thread on both sides. 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-G-04LL	DIN 2353 connector G 4LL	-	100	In stock	Enquiry
HD-G-06L	DIN 2353 connector G 6L	-	315	In stock	Enquiry
HD-G-06LL	DIN 2353 connector G 6LL	-	100	In stock	Enquiry
HD-G-06S	DIN 2353 connector G 6S	-	630	In stock	Enquiry
HD-G-08L	DIN 2353 connector G 8L	-	315	In stock	Enquiry
HD-G-08LL	DIN 2353 G 8LL fitting	-	100	In stock	Enquiry
HD-G-08S	DIN 2353 G 8S fitting	-	630	In stock	Enquiry
HD-G-10L	DIN 2353 fitting G 10L	-	315	In stock	Enquiry
HD-G-10S	DIN 2353 fitting G 10S	-	630	In stock	Enquiry
HD-G-12L	DIN 2353 fitting G 12L	-	315	In stock	Enquiry
HD-G-12S	DIN 2353 connector G 12S	-	630	In stock	Enquiry
HD-G-14S	DIN 2353 fitting G 14S	-	630	In stock	Enquiry
HD-G-15L	DIN 2353 fitting G 15L	-	315	In stock	Enquiry
HD-G-16S	DIN 2353 connector G 16S	-	400	In stock	Enquiry
HD-G-18L	DIN 2353 connector G 18L	-	315	In stock	Enquiry
HD-G-20S	DIN 2353 fitting G 20S	-	400	In stock	Enquiry
HD-G-22L	DIN 2353 fitting G 22L	-	160	In stock	Enquiry
HD-G-25S	DIN 2353 fitting G 25S	-	400	In stock	Enquiry
HD-G-28L	DIN 2353 connector G 28L	-	160	In stock	Enquiry
HD-G-30S	DIN 2353 fitting G 30S	-	400	In stock	Enquiry
HD-G-35L	DIN 2353 fitting G 35L	-	160	In stock	Enquiry
HD-G-38S	DIN 2353 G 38S fitting	-	315	In stock	Enquiry
HD-G-42L	DIN 2353 fitting G 42L	-	160	In stock	Enquiry

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DIN 2353 straight fitting, type G: socket 24° DIN 2353, with external metric thread on both sides. Available as: LL (very light series), L (light series), S (heavy series). Material: carbon steel, galvanized.