{"id":13865,"date":"2026-09-29T16:02:56","date_gmt":"2026-09-29T14:02:56","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=13865"},"modified":"2026-09-30T12:13:57","modified_gmt":"2026-09-30T10:13:57","slug":"oleo-tecnica-butt-weld-stubs-for-metric-tube","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/oleo-tecnica-butt-weld-stubs-for-metric-tube\/","title":{"rendered":"Oleo Tecnica Butt-Weld Stubs for Metric Tube"},"content":{"rendered":"

Construction Features and Materials<\/h3>\n

Oleo Tecnica Butt-Weld Stubs for Metric Tube are hydraulic components designed to ensure a leak-tight seal and an extremely high level of structural strength within high-pressure circuits. These components are manufactured using premium materials, specifically selected for their mechanical properties and corrosion resistance. Available options include A105 carbon steel (or similar material with equivalent properties) and AISI 316L stainless steel, which is particularly suitable for aggressive environments or specific fluid compatibility requirements.<\/p>\n

Pressure Specifications and Available Series<\/h3>\n

The range is divided into two main configurations to meet different hydraulic load requirements: Series 3000 and Series 6000.<\/p>\n

Series 3000 offers sizes ranging from 1\/2″ up to 5″, with maximum recommended working pressures ranging from 345 Kg\/cm\u00b2 for the smaller sizes (from 1\/2″ to 1″), progressively decreasing to 276 Kg\/cm\u00b2, 207 Kg\/cm\u00b2, and down to 34 Kg\/cm\u00b2 for the larger diameters (from 3″1\/2 to 5″).<\/p>\n

Series 6000, designed for higher loads, is available in sizes from 1\/2″ to 3″. In this series, the maximum working pressure reaches 414 Kg\/cm\u00b2 for specific sizes such as 2″ and 3″, while the other variants operate between 230 Kg\/cm\u00b2 and 375 Kg\/cm\u00b2. It is important to note that the maximum recommended working pressure is based on the flange, while the maximum working pressure of the entire system is determined by the thickness and quality of the steel used for the pipe.<\/p>\n

Variants and Ordering Designations<\/h3>\n

To maximize application flexibility, the components feature two main designations related to the sealing system. The stubs can be ordered in the version with an O-Ring seat, identified by the codes SFS…ST and SFX…ST, which ensures an optimized static connection against leakage. Alternatively, for systems using different sealing methods, the version without an O-Ring seat is available and can be ordered under the codes SFX…STC and SFS…STC. This precise nomenclature ensures correct identification of components during procurement.<\/p>\n

Installation and Sizing Guidelines<\/h3>\n

Correct mechanical coupling requires strict preliminary inspection: for this type of product, it is essential to always verify that the “A” and “B” dimensions of the stub exactly match the schedule of the metric tube used in the system. This precaution prevents flow restrictions, turbulence or structural weakening near the welded joint. The overall dimensions (C, D, E, F) vary according to the selected size and are combined with the specific O-Ring type specified in the catalogue (e.g. 4075, 4100, up to 4537), ensuring a geometrically precise and durable installation.<\/p>\n

Technical Summary Table of the Main Characteristics of Oleo Tecnica Butt-Weld Stubs for Metric Tube<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Characteristic<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Product Type<\/td>\nButt-weld stubs for metric tube (Weld on adapters for metric tube)<\/td>\n<\/tr>\n
Materials<\/td>\nA105 or equivalent \/ AISI 316L<\/td>\n<\/tr>\n
Available Series<\/td>\nSeries 3000 \/ Series 6000<\/td>\n<\/tr>\n
Series 3000 Sizes<\/td>\nFrom 1\/2″ to 5″<\/td>\n<\/tr>\n
Series 6000 Sizes<\/td>\nFrom 1\/2″ to 3″<\/td>\n<\/tr>\n
Max Pressure (Series 3000)<\/td>\nFrom 34 Kg\/cm\u00b2 to 345 Kg\/cm\u00b2 (depending on the flange)<\/td>\n<\/tr>\n
Max Pressure (Series 6000)<\/td>\nFrom 230 Kg\/cm\u00b2 to 414 Kg\/cm\u00b2 (depending on the flange)<\/td>\n<\/tr>\n
Sealing Versions<\/td>\nWith O-Ring seat (SFS…ST, SFX…ST) \/ Without O-Ring seat (SFX…STC, SFS…STC)<\/td>\n<\/tr>\n
System Pressure<\/td>\nDetermined by the thickness and type of pipe material<\/td>\n<\/tr>\n
Installation Warning<\/td>\nAlways verify that dimensions “A” and “B” match the pipe schedule<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Product Codes<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/th>\nSeries<\/th>\nSize<\/th>\nMax Pressure (Kg\/cm\u00b2)<\/th>\nO-Ring Type<\/th>\nWeight (Kg)<\/th>\n<\/tr>\n<\/thead>\n
SFS301ST<\/td>\n3000<\/td>\n1\/2″<\/td>\n345<\/td>\n4075<\/td>\n0,08<\/td>\n<\/tr>\n
SFS302ST<\/td>\n3000<\/td>\n3\/4″<\/td>\n345<\/td>\n4100<\/td>\n0,16<\/td>\n<\/tr>\n
SFS303ST<\/td>\n3000<\/td>\n1″<\/td>\n345<\/td>\n4131<\/td>\n0,23<\/td>\n<\/tr>\n
SFS304ST<\/td>\n3000<\/td>\n1″1\/4<\/td>\n276<\/td>\n4150<\/td>\n0,30<\/td>\n<\/tr>\n
SFS305ST<\/td>\n3000<\/td>\n1″1\/2<\/td>\n207<\/td>\n4187<\/td>\n0,40<\/td>\n<\/tr>\n
SFS306ST<\/td>\n3000<\/td>\n2″<\/td>\n207<\/td>\n4225<\/td>\n0,50<\/td>\n<\/tr>\n
SFS307ST<\/td>\n3000<\/td>\n2″1\/2<\/td>\n172<\/td>\n4275<\/td>\n0,80<\/td>\n<\/tr>\n
SFS308ST<\/td>\n3000<\/td>\n3″<\/td>\n138<\/td>\n4337<\/td>\n1,10<\/td>\n<\/tr>\n
SFS309ST<\/td>\n3000<\/td>\n3″1\/2<\/td>\n34<\/td>\n4387<\/td>\n1,40<\/td>\n<\/tr>\n
SFS310ST<\/td>\n3000<\/td>\n4″<\/td>\n34<\/td>\n4437<\/td>\n1,75<\/td>\n<\/tr>\n
SFS311ST<\/td>\n3000<\/td>\n5″<\/td>\n34<\/td>\n4537<\/td>\n2,62<\/td>\n<\/tr>\n
SFS601ST<\/td>\n6000<\/td>\n1\/2″<\/td>\n345<\/td>\n4075<\/td>\n0,08<\/td>\n<\/tr>\n
SFS602ST<\/td>\n6000<\/td>\n3\/4″<\/td>\n345<\/td>\n4100<\/td>\n0,15<\/td>\n<\/tr>\n
SFS603ST<\/td>\n6000<\/td>\n1″<\/td>\n345<\/td>\n4131<\/td>\n0,23<\/td>\n<\/tr>\n
SFS604ST<\/td>\n6000<\/td>\n1″1\/4<\/td>\n276<\/td>\n4150<\/td>\n0,30<\/td>\n<\/tr>\n
SFS605ST<\/td>\n6000<\/td>\n1″1\/2<\/td>\n375<\/td>\n4187<\/td>\n0,50<\/td>\n<\/tr>\n
SFS606ST<\/td>\n6000<\/td>\n2″<\/td>\n414<\/td>\n4225<\/td>\n0,80<\/td>\n<\/tr>\n
SFS607ST<\/td>\n6000<\/td>\n2″1\/2<\/td>\n230<\/td>\n4275<\/td>\n2,30<\/td>\n<\/tr>\n
SFS608ST<\/td>\n6000<\/td>\n3″<\/td>\n414<\/td>\n4337<\/td>\n6,40<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n","protected":false},"excerpt":{"rendered":"

Oleo Tecnica Butt-Weld Stubs for Metric Tube ensure reliable connections for hydraulic circuits. Available in Series 3000 and 6000 (with and without O-Ring seat) and manufactured from A105 or AISI 316L, they withstand high operating pressures. It is essential to verify the compatibility of dimensions A and B with the pipe schedule. The available product codes are: SFS301ST, SFS302ST, SFS303ST, SFS304ST, SFS305ST, SFS306ST, SFS307ST, SFS308ST, SFS309ST, SFS310ST, SFS311ST, SFS601ST, SFS602ST, SFS603ST, SFS604ST, SFS605ST, SFS606ST, SFS607ST, SFS608ST.<\/p>\n","protected":false},"featured_media":13605,"template":"","meta":{"_joinchat":[]},"product_brand":[],"product_cat":[106,494,493],"product_tag":[327],"class_list":{"0":"post-13865","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-flanges","7":"product_cat-pipe-stubs","8":"product_cat-sae-j518","9":"product_tag-oleo-tecnica","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"\nOleo Tecnica Butt-Weld Stubs for Metric Tube - LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Oleo Tecnica Butt-Weld Stubs for Metric Tube: Series 3000 and 6000 in A105 or AISI 316L. 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